Dental Decks

Shillingburg et al, Fundamentals of Fixed Prosthodontics, 3rd Edition Quintessences. 1Fundamentals of Occlusion and Tempropmandibular Disorders.St. Louis, Mosby. 2

Rhan, Arthur O, Heartwell Charles, Textbook of Complete Denture, 5th Edition. 3Craig R Restorative Dental Materials. 4McGivney, G, Carr, A: McCracken's Removable Partial Prosthodontics, Mosby, St. Louis,10th Edition.

http://dc438.4shared.com/doc/fEk5XvWn/preview.html

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1) Which of the following characteristics of inlay wax is its major disadvantage ?a) flow.b) rigidity.c) hardness.d) high thermal expansion.

2) When porcelain is baked against metal, it should possess aa) high fusion expansion.b) high fusion temperature.c) linear coefficient of thermal expansion less than, but close to,that of the metal.d) linear coefficient of thermal expansion greater than but close to that of metal.

3) As the gold content of a dental solder decreases,thea) hardness decreases.b) ductility increases.c) corrosion resistance decreases.d) ultimate tensile strength decreases.

4) Reversible hydrocolloids exhibit the property of transformation from sol to gel and gel to sol as afunction of thea) concentration of the fillers and plasticizers.b) percentage of composition by weight of water.c) concentration of potassium sulfate.d) temperature.

5) An anterior fixed partial denture is contraindicated whena) abutment teeth are noncarious.b) an abutment tooth is inclined 15 degree but is otherwise sound.c) there is considerable resorption of the residual ridge.d) crowns of the abutment teeth are extremely long owing to gingival recession.

6) In which of the following properties does a type IV partial denture gold alloy exceed a base-metalpartial denture alloy in numerical valuea) hardness.b) specific gravity.c) casting shrinkage.d) fusion temperature.


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7) Within practical limits, when the water/ powder ratio is increased beyond the recommended amountin mixing plaster, thea) setting time is increased.b) setting expansion is decreased.c) compressive strength is decreased.d) all of the above.

8) In processing an acrylic denture in a water bath, a proper heating cycle is desired because of thepossibility ofa) warpage.b) shrinkage of the denture.c) porosity due to boiling of the monomer.d) crazing of the denture base around necks of the teeth.

9) An over load of the mucosa will occur if thea) teeth used for replacement are nonanatomic.b) bases covering the area are too small in out line.c) bases covering the area are too large in out line.d) bases covering the area are overextended distally.

10) In an alginate impression material, trisodium phosphate is thea) filler.b) reactor.c) retarder.d) acclerator.

The following chemically bond to the tooth:1.

Composite resin.a.

Dental sealants.b.

Glass ionomer cement. ***c.

All of the above.d.

Orthognathic ridge relationship (class II) presents several problems which should be taken intoconsideration when constructing complete denture prosthesis. These include all EXCEPT:

2.


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Require minimum interocclusal distance. ***a.

Have a great range of jaw movement.b.Require careful occlusion, usually cuspless teeth are indicated. c.

Complete Denture 17th Ed page 16

RESIDUAL RIDGE RELATIONSHIP: Class II or retrognathic is usually difficult as the patientlooks toothy, often holds the mandible forward to improve appearance with subsequent TMJproblems, usually have a great range of jaw movements in function, require careful occlusion,and usually needs a large interocclusal distance. Class Ill or prognathic is usually easier if notextreme. The patient usually functions on a hinge (little or no protrusive component) and requiresa minimum of interocclusal distance. In any case, do not set the teeth for a retrognathic orprognathic patient in a normal relationship, unless there is only a moderate deviation from ClassI.

Planning centric occlusion for complete denture, it is advisable to have:3.

1-2 mm of vertical and horizontal overlap of upper and lower anterior teeth with no contact. *** a.

Definite tooth contact of upper and lower anterior teeth in order to facilitate the use of anterior teeth forincision.

b.

The posterior extension of max complete denture can be detected by the followings EXCEPT:

Hamular notch. a.

Fovea palatine. *** b.

Vibrating line.c.

4.

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.

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The distal palatal termination of the maxillary complete denture base is dictated by the:5.

Tuberosity. a.

Fovea palatine. b.

Maxillary tori.c.

Vibrating line. ***d.

Posterior palatal seal. e.

heartwell 5th ed - page 224

Vibrating line is determined the posterior extension of the posterior palatal seal

All are participating in the determination of the posterior extension of the maxillary denture (posteriorpalatal extension) EXCEPT:vibrating linehamular notchfovae palatineretromolar (pads) areas. ***

6.

Vibrating line:7.

Between hard & soft palate.a.

Between mobile and non mobile soft tissue. ***b.

oral surgeon put his finger on the nose of the patient and the patient asked to blow.This done to check:a. anterior extention of posterior palatal seal. ***b. lateral extension of posterior palatal seal

8.


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c. posterior extension of posterior palatal seal.d. glandular opening

Dental Decks - page 440

Land marks for posterior palatal seal:

The posterior outline: is formed by the "Ah" line or vibrating line and passes through the twopterygomaxillary (hamular) notchs and is close to the fovea palatine.

The anterior outline: is formed by the "blow" line and is located at the distal extent of the hard palate.

Pt. Presented after insertion of complete denture complaining of dysphagia and ulcers what is the causeof dysphagia?-over extended. ***-over post dammed.-under extended-under post dammed

9.

:

:

.

.

, .

Pt with denture has swallowing problem and sore throat. The problem is: 10.

Posterior over extension at distal palatal end. ***a.

Over extension of lingual.b.

Over extension of hamular notch. c.


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Nausea is a complaint that a new denture wearer might encounter. It may result from: 11.

Thick posterior border. a.

Denture under extended. b.

Denture slightly over extended. c.

A & b are correct. ***d.

Complete Prosthodontics (problems,diagnosis&managment) page 78

Gagging (nausea): loose denture thick distal termination of upper denture lingual placement of upperdenture occlusal plane low.

Complete Denture 17th Ed page 128

3. Gagging:

a. Psychogenic -starts in mind, very difficult to treat

b. Stomatogenic -starts in body (usually dentures), treatable

c. Dental causes:

Lack of retention1.

Poor occlusion2.

Insufficient or excessive palatal seal. 3.

Crowded tongue due to a thick palate or poor tooth placement4.

Excessive salivation5.

Excessive vertical dimension (often seen in new dentures)6.

And

http://web.wits.ac.za/NR/rdonlyres/F...esManualV6.pdf

Denture over-extension onto the soft palate may stimulate a gag reflex directly by continuous contact orindirectly by intermittent contact brought about by the activity of the soft palate or posterior third of thetongue.An under-extended denture (or an unstable denture from occlusal interferences) will lack a posterior seal, willdislodge intermittently, irritate the posterior third of the tongue and thus cause nausea.A palpable and thickened posterior border will also irritate the tongue. Interference with tongue space, as inan excessively large vertical dimension which causes compensatory protrusion of the tongue, or in a narrowarch which forces the tongue to occupy an unnatural position, may also manifest as nausea.

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: Protusive imbalance .

After insertion of complete denture, Pt came complaining from pain in TMJ and tenderness of musclewith difficulty in swallowing, this could be due to:

12.

High vertical dimension. ***a.

Low vertical dimension.b.

Thick denture base.c.

Over extended denture base.d.


Most common complete denture post insertion complaint after 24 hrs:a. Rough.b. Overextension causing laceration. ***c. Pt not used to new vertical dimension.

13.

Which palatal form is more retentive and offers better stability to complete denture:a. V shapedb. Wide palatec. U shaped ***d. Flat palate

14.

All relate to retention of maxillary complete denture EXCEPT:15.

Tongue movement. ***a.

Type of saliva.b.

405

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Compomer restorative materials are:19.

Glass ionomer with polymer componentsa.

Resin systems with fluoride containing glasses. ***b.

Composite resin for cervical restorations only.c.

http://en.wikipedia.org/wiki/Dental_compomerThe composition of compomers is similar to that of a dental composite however it has beenmodified, making it a polyacid-modified composite. This results in compomers stillrequiring a bonding system to bond to tooth tissue.

And

Sturdevant's art and science of operative dentistry, 4th edition, page 209

Although the name compomer implies that the material possesses a combination of characteristics of bothcomposite and glass ionomers, these materials are essentially polymer-based composites that have beenslightly modified to take advantages of the potential fluoride-releasing behavior of glass ionomers.

The most frequent cause of failure of a cast crown restoration is:20.

Failure to extend the crown preparation adequately into the gingival sulcus. a.

Lack of attention in carving occlusal anatomy of the tooth.b.

Lack of attention to tooth shape, position, and contacts ***.c.

Lack of prominent cusps, deep sulcus, and marginal ridges. d.


An examination of the edentulous mouth of an aged Pt who has wore maxillary complete dentures formany years against six mandibular teeth would probably show:

21.

Cystic degeneration of the foramina of the anterior palatine nerve. a.


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Loss of osseous structure in the anterior maxillary arch. ***b.

Flabby ridge tissue in the posterior maxillary arch. c.

Insufficient inter occlusal distance.d.

Dental decks - page 390

When a patient wears complet maxillary denture agansit the six mandibular anterior teeth its very common tohave to do a reline so often de to loss of bone strucutrein anterior maxillary arch.

The posterior seal in the upper complete denture serves the following functions:22.

It reduces Pt discomfort when contact occurs between the dorsum of the tongue and the posterior endof the denture base.

a.

Retention of the maxillary denture.b.

It compensate for dimensional changes which occur in the acrylic denture base during processing.c.

A& b are correct. ***d.

: 2006

.

Dental Decks

If the oral tissues are inflamed and traumatized, impression for making a new denture:23.

Should be started immediately in order to prevent further deterioration. a.

The occlusion of the existing denture is adjusted, and tissue condition material is applied, andperiodically replaced until the tissue are recovered, then making impression take place. ***

b.

The Pt is cautioned to remove the denture out at night.c.

A & B are correct.d.


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All of the above are correct.e.

Balanced occlusion refers to:24.

The type of occlusion which allows simultaneous contact of the teeth in centric occlusion only.a.

The type of occlusion which allows simultaneous contact of the teeth in centric and eccentric jawpositions.

b.

A type of occlusion which is similar to the occlusion of the natural teeth.c.


Polyether impression materials:25.

Are less stable dimensionally than poly sulfide rubber.a.

Are less stiff than poly sulfide rubber.b.

Can absorb water and swell if stored in water. ***c.

.

The indication for the use of lingual plate major connector include:26.For the purpose of retention.a.

When the lingual frenum is high or when there is a shallow lingual sulcus.b.

To prevent the movement of mandibular anterior teeth.c.

All of the above. ***d.

Dental decks 641

.

.

: -


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Lingual plate:a. Shallow sulcusb. Mobile anterior teethc. Deep sulcusd. A+b ***e. All of above

27. Lingual bar contraindication:- short lingual sulcus- long lingual sulcus- too crowded lower anterior teeth

Dental decks 641 .

: .

In class I partially edentulous lower arch, selection of major connector depend on:27.Height of lingual attachment.a.

Mandibular tori.b.

Periodontal condition of remaining teeth.c.


An anterior fixed partial denture is contraindicated when:28.

Abutment teeth are not carious.a.

An abutment tooth is inclined 15 degrees but otherwise sound.b.

There is considerable resorption of the residual ridges. ***c.

Crown of the abutment teeth are extremely long owing to gingival recession.d.


15 .

Dental decks 640 : - - - - -


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.

In registering the vertical dimension of occlusion for the edentulous patient. The physiological restdimension:

29.

Equals the vertical dimension of occlusion. a.

May be exceeded if the appearance of the patient is enhanced. b.

Is of little importance as it is subject to variations. c.Must always be greater than vertical dimension of occlusion. *** d.


Three weeks after delivery of a unilateral distal extension mandibular removable partial denture, a Ptcomplained of a sensitive abutment tooth, clinical examination reveals sensitivity to percussion of thetooth, the most likely cause is:

30.

Defective occlusion. *** a.

Exposed dentine at the bottom of the occlusal rest seats.b.

Galvanic action between the framework and an amalgam restoration in the abutment tooth.c.


PT with lower complete denture, intraoral examination show with slightly elevated lesion withconfirmed border, PT history of ill fitting denture. It is by:

31.

Immediate surgical removal.a.

Instruct PT not to use denture for 3 weeks then follow up. ***b.

Reassure PT and no need for treatment.c.

Examination of residual ridge for edentulous PT before construction of denture determine stability,32.


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support and retention related to the ridge:

True. ***a.

False.b.

Upon examination of alveolar ridge of elderly PT for construction of lower denture easily displaceabletissue is seen in the crest of ridge. Management:

33.

Minor surgery is needed.a.

Inform the PT that retention of denture will decrease.b.

Special impression technique is required. ***c.

: "Questions and Answers "

.

Class III jaw relation in edentulous PT:34.It will affect size of maxillary teeth.a.

Affect retention of lower denture.b.

Affect esthetic and arrangement of maxillary denture.c.

All of the above. d.

In recording man-max relation,the best material used without producing pressure is:35.

Wax.a.

Compound.b.

Bite registration paste (zinc oxide & eugenol paste). ***c.


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In recording jaw relation, best to use:36.Occlusal rim with record base. *** a.

Occlusal rim with base wax.b.

Occlusal rim with nacial frame.c.


Occlusal rims: make maxilla-mandibular jaw records.

32-The goal of construction of occlusion rims is:

To obtain the occlusal plane, vertical dimension, tentative centric relation, face low transfer, placementof the teeth. ***

1.

To obtain the protrusive condylar guidance.2.

To obtain the lateral condylar posts and incisal guide.3.

None.4.

A temporary form representing the base of a denture which is used for making maxillo-manibular (jaw)relative record for arranging teeth or for trail insertion in the mouth is:

37.

1. Bite rims.

2. Custom tray.

3. Set up.

4. Base plate. ***

To recheck centric relation in complete denture:38.

Ask PT to swallow and close.a.


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Ask PT to place tip of tongue in posterior area and close. ***b.

To wet his lip and tongue.c.

All of the above.d.

During post insertion examination of a 3 unit ceramometal fixed partial denture. One of the retainersshowed chipping of porcelain at the ceramometal junction. In order to avoid the problem the dentistmust:

39.

Reduce the metal to 0.3 mm.a.

Have uniform porcelain thickness. b.

Have occlusion on metal.c.

Keep porcelain metal junction away from centric contacts. ***d. ) ( 1.5

.

What is a Pier abutment?40.

Single tooth holding one pontic.a.

A tooth that supports a removable partial denture.b.

All of the above.c.

None of the above. ***d.

.

.

.

Which are the ways in which the proximal contacts can be checked?41.

Use a pencil.a.

Use a shim stock. b.


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Use a silicone checker.c.

Use a dental floss.d.

Only b & d. ***e.

.Journal of Oral RehabilitationVolume 14 Issue 1, Pages 91 - 94

A total of 969 proximal contacts in forty volunteer subjects was examined for proximal contact integrity withshim stock. It passed uninhibited through 88% of the contacts. Neither sex nor age affected the evaluation;however, shim stock was more likely to pass through contacts with enamel surfaces than those which wererestored

The incisal reduction for a metal ceramic restoration should be:42.

1.5 mm.a.

2 mm. ***b.

3 mm.c.

4 mm.d.

"Contemporary Fixed Prosthodontics"

The occlusal reduction for an all metal veneer crown should:43.

Be as flat as possible to enable an easy fabrication of occlusion anatomy. a.

Follow the occlusal morphology with a clearance rating from 1 to 1.5 mm with the opposing dentition.***

b.

Follow the occlusal morphology with a clearance of no more than 0.5 mm with the opposing dentition.c.

Be the last step in the tooth preparation.d.

1-1.5 .

0.5 1-1.5 .


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Gingival retraction is done:44.

To temporarily expose the finish margin of a preparation.a.

To accurately record the finish margin of a portion of uncut tooth surface apical to the margin in thefinal impression.

b.

Even in the presence of a gingival inflammation.c.

By various methods but the most common one is the use of retraction cord. d.

A and b.e.

A, b and c.f.

A, b and d. ***g.

Regarding tissue retraction around tooth:45.

Short duration of retraction of gingival margin during preparation of finishing line.a.

Retraction of gingival margin during taking final impression to take all details of unprepared finishline.

b.

Usually retracted severely inflamed gingival margin.c.

Retraction of gingival margin can be done by many ways one of them is retraction cord.d.

A, b and c.e.

B, c and d.f.

A and d. ***g.

The most accurate impression material for making the impression of an onlay cavity:46.

Impression compound.a.

Condensation type silicone.b.

Polyvinyl siloxane ***c.

Polysulfide.d.


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Missing lower six and tilted 7a- Uprighting of molar by orthodontics.b- Proximal half crown.c- Telescope crown.d- Non rigid connector. ***

47.


None rigid connector: it is indicated when retainers cannot be prepared without excessive tooth reduction.

Length of pins must be equals in both tooth and restoration by a depth of:

1 mm.a.

2 mm. ***b.

3 mm.c.

4 mm.d.

48.

2 .

Stainless steel pin is used in amalgam for:

Increase retention. ***a.

Increase resistance.b.

Increase streangth.c.

A and b.d.

49.

Dental decks 2210 .

Single rooted anterior teeth has endodontic treatment is best treated by:

Casted post and core. ***a.

Performed post and composite.b.

50.


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Performed post and amalgam.c.

Composite post and cored.

Post fracture decrease withprefabricated postready made postcasted post. ***metal post

51.

Teeth with RCT and you want to use post, which post is the least cause to fracture:1. Ready made post.2. Casted post.3. Fiber post. ***4. Prefabricated post.

52.

During post removal the first thing to do is:53.

A) remove the G.P

B) remove all the old restoration & undermined enamel & caries. ***

C) insertion of post immediately

For root canal treated tooth u choose to put post & amalgam this depend onremaining coronal structure ***root divergence-presence of wide root-others

54.

Post length increasing will.increase retention. ***.increase resistant.increase strength of restoration

55.


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For post preparation we should leave mm of GP:56.

????a.

10mmb.

5mm. ***c.

:

Http: //www.experts123.com/q/how-much...placement.html

Post and core - Wikipedia, the free encyclopedia

Which of the following endodontic failure may be retreated only with surgery:57.

Missed major canal.a.Persistent interappointment pain. b.

Past and core. ***c.

Short canal filling.d.

Which of the following failure may be treated nonsurgically:58.

Post filling that has removed. ***a.

Severe apical perforation. b.

Very narrow canal with a periapical lesion and the apex can not be reached.c.

None of the above.d.

In post and core preparation must:59.

Extend to contrabevel.a.

Extend to full length tooth preparation.b.

Take same shape of natural tooth.c.

Take shape of preparation abutment.d.


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A & d. ***e.

A & b.f.

D & c.g.

B & c.h.

.

After RCT, for insertion of post dowel:60.

Post applied pressure.a.

Post should be lose.b.

Insert it without pressure but with retention. ***c.

Amount of G.P should after post preparation:

1 mm.a.

4-5 mm.b.

10 mm.c.


61.

Oxford Handbook of Clinical Dentistry - 4th Ed. (2005) page 154

As a general guide the post should be at least equal to the anticipated crown height, but a minimum of 4 mmof well-condensed GP should be left. A periodontal probe is helpful to check prepared canal length.

Post retention depends on:

Post length.a.

Post diameter.b.

Post texture. c.

62.


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Core shape.d.

Design of the preparation.e.

A and bf.

A, b and c. ***g.

All of the above.h.

A.i.

: 4 - 1

.

The best restoration for max central incisor that has received RCT through conservatively preparedaccess opening would be:

63.

Post-retained metal-ceramic crown.a.

Post-retained porcelain jacket crown.b.Composite resin. ***c.


Pt complain from pain in 45 whitch had gold onlay. The pain could be due to:

Chemicals from cement.a.

High thermal conductivity of gold. ***b.

Related to periodontal ligament.c.

Cracked tooth or fractured surface.d.

1.


Disadvantages of gold restoration:

Esthetics cost time consuming difficulty of technique the need to use cement (the weakest point in thecast gold restoration) gold has high thermal conductivity.


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For onlay preparation, reduction of functioning cusp should be:

1.5 mm. ***a.

2 mm.b.

1 mm.c.

64.

"Contemporary Fixed Prosthodontics ROSENSTIEL" + Dental Decks - page 2122

1.5 1

Thickness of porcelain should be:

03-05 mm.a.

0.05-0.15 mm.b.

0.5-1.5.mm. ***c.

65.


The necessary thickness of the metal substucture is 0.5 mmthe minimal porcelain thickness is 1.0 - 1.5 mm

Occlusal plane is:

Above the level of the tongue.a.

Below the level of the tongue. ***b.

66.

: " mcqs in Dentistry"

" the tongue rests on the occlusal surface"

Polyvinyl siloxanes compared with polysulfide:

Can be poured more than once.a.

Can be poured after 7 days.b.

67.


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Less dimensional stability.c.

A and b. ***d.

the most accurate impression material for making impression of an oral cavity is:a- impression compound.b- condensation type silicon.c- polyvinyl siloxanes. ***d- poly sulfide.

68.

http://www.medicaljournal-ias.org/7_1/Keyf.pdfthe addition silicones are the best choice of the rubber impression materials

Addition curing silicones have the least amount of shrinkage on setting making them the most accurate classof rubber impression material (9). The poly(vinylsiloxanes) are characterized by excellent dimensionalaccuracy and long-term dimensional stability.

Polysulfide impression material:69.

Should be poured within 1 hour. ***a.

Can be poured after 24 hours.b.

Can be poured 6-8 hours.c.

Amount of reduction in PFM crown:

1.5-2. ***a.

1.7-2.b.

2-5.c.

70.

In distal extension p.d during relining occlusal Rest was not seated:

Remove impression and repeat it. ***a.

71.


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Continue and seat in after relining.b.

Use impression compound.c.

After taking alginate impression:

Wash with water and spray with sodium hydrochloride for 10 sec.a.

Same but wait 5-10 min and then put in sealed plastic bag.***b.

72.

Check biting in lower denture can occur if:

Occlusal plane above tongue.a.

Occlusal plane below tongue.b.

Occlusal plane at lower lip.c.

None of the above. ***d.

1.

Complete Denture 17th Ed

Cheek, lip, or tonaue biting:

a. Cheek biting is the most common and is mainly due to inadequate overjet.Solution: Increase the overjet by reducing the buccal of the lower posterior teeth. Usually necessary in molararea only.

b. Tongue biting -increase the overjet by reducing the lingual of the upper posterior teeth; usually the molars.c. Lip biting is not common and is usually due to poor tooth placement or poor neuromuscular control.

Dental Decks - page 394 = Occlusal plane abovetongue.

Occlusal plane should be:

Parallel to interpupillary line.a.

Parallel to ala tragus line.b.

At least tongue is just above occlusal plane.c.All of the above. ***d.

2.


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To enhance strength properties of ceramo metal restoration, it is important to:73.

Avoid sharp or acute angles in the metal structure.a.

Build up thick layer of porcelain.b.

Porcelain should be of uniform thickness and any defect of the preparation should be compensated bythe metal substructure.

c.

Compensate any defect in the preparation equally by porcelain and metal substructure.d.

A and b are correct.e.

A and c are correct. ***f.

B and d are correct.g.

shillingburg 3rd ed - page 457

sharp angels and under cuts should be avoided.thin porcelain with uniform thickness supported by rigid thickness is the strongest.porcelain should be kept at a minimum thickness that is still compatible with good estheticdeficiencies of the tooth preparation.should be compensated by with extra thickness of the coping in thoseareas.

Endodontically treated 2nd maxillary premolar with moderate M & D caries is best restored by:74.

Amalgam.a.

3/4 crown.b.

Full crown. ***c.

Onlay.d.

Occlusal rest function:75.

To resist lateral chewing movement.a.

To resist vertical forces. ***b.


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Stability.c.

Retention.d.

.

In placement of R.D: 76.

4 jaw contact in teeth.a.Only 4 contacts 2 lingual surface and 2 buccal surface. ***b.

Only 4 contacts 2 mesial and 2 distal.c.

Crown with open margin can be due to:

Putting die space on finishing line. ***a.

Waxing not covering all crown prep. b.

Over contouring of crown prevent seating during insertion.c.


77.

Artificial teeth best to be selected by:

Preextraction cord. ***a.

Postextraction cord.b.

78.


In full gold crown, to prevent future gingival recession:

Make the tooth form good at gingival one third. ***a.

79.


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Make the tooth form good at gingival one fifth.b.

Make the tooth form good at gingival one half.c.


Fixed partial prosthesis is more successful in:

Single tooth missing. ***a.

Multiple missing teeth.b.

80.

Best pontic is:

Ridge lap. a.

Hygiene. *** b.

81.

Saddle.

Indirect composite inlay has the following advantages over the direct composite EXCEPT:82.

Efficient polymerization.a.

Good contact proximally.b.

Gingival seal. c.

Good retention. ***d.

OR:

Indirect composite inlay over come the direct composite by

1/ insusffition polymerization

2/good contact proximaly

3/ gingival seal

4/ good retention

1/ 1-2-4

2/ 1-2-3. ***

3/ 4-3


30 of 84 14-May-13 2:46 AM

Check bite of retainer by:83.

Paste. ***84.

Impression.85.

.

White polycarbonate are temporary crowns used for anterior teeth:

True. ***a.

False.b.

86.

Cause of fracture of occlusal rest:

Shallow preparation in marginal ridge. *** a.

Extension of rest to central fossa.b.

Improper centric relation.c.

87.

Bridge return to dentist from lab with different degree of color although the shade is the same, thecause:

Thin metal framework.a.

Different thickness of porcelain. ***b.

Thick opaque.c.

88.

Complete denture poorly fit and inadequate interocclusal relation:

Relining.a.

89.


31 of 84 14-May-13 2:46 AM

Rebasing.b.

New denture. ***c.


During placement of amalgam pins, the number of pins per cusp is:

1 pin. ***a.

2 pins.b.

3 pins.c.

4 pins.d.

90.

Over erupted upper right 1st molar will be managed by: EXCEPT:

Intruded easily orthodontically. *** a.

Crowing.b.

Adjustment of occlusion.c.

91.

Over erupting tooth can be treated by:92.

Crowning after endo. ***1.

Ortho intrusion.2.

Extraction.3.

A and B.4.

All the above.5.

The amount of facial redaction in PFM crown:

1.3. ***a.

93.


32 of 84 14-May-13 2:46 AM

1.7.b.

0.8.c.

2.2.d.

A tooth with 25 degree inclination could be used as abutment:

True. ***a.

False.b.

94.

In onlay, stopping of cusp is 1.5-2 m.m:

True. ***a.

False.b.

95.

Causes of failure of cast crown.96.

Which one of the following is least likely to contribute to oral bad breath:

Periodontal disease.a.

Denture. ***b.

Faulty restoration.c.

Carious lesions.d.

97.

For the ceramometal restorations, the type of finish line is:98.

Chamfer ***a.

Beveled shoulderb.


33 of 84 14-May-13 2:46 AM

shillingburg 3rd ed - page 151

Beveled shoulder: According to the results of this study as the shoulder bevel had better fit than shoulder anddeep chamfer designs and also there was significant difference between shoulder bevel and shoulder, so it isrecommended to use shoulder bevel finish line in the metal ceramic restoration.

http://scialert.net/fulltext/?doi=jms.2008.665.668&org=11

Benefits of opaque porcelain layer:99.

Bonding the metal structure.a.

Initiating the color.b.

A & b. ***c.


Which of the following types of base materials can be placed in contact with polymethyl methaacrylate& not inhibit the polymerization of the resin:

100.

ZOEa.

GI cementb.

Zn phosphate cementc.

Varnishd.

B, c. ***e.

Dental Decks - page 2076 - 2102

Cement which contains fluoride:101.

GI. ***a.

ZOE.b.


34 of 84 14-May-13 2:46 AM

Reinforced ZOE.c.

Polycarboxylate cement.d.

the type of cement wich give retention to crowna-zn phosphateb-zn polycarpoxylatec-resind-resin modified glass ionomer

102.

A restoration of anterior teeth with RCT, abraded incisal edge & small M&D caries is by:103.

Ceramometal crown. ***a.

Composite laminated.b.

Veneer.c.


The powder for GI cement contain:104.

Sio2, Al2o3, caf. ***a.

Sio2,zno, barium sulphateb.

None of the above.c.

GIC Powder: Silica 41.9% - Alumina 28.6% - Calcium Fluoride 15.7% - Sodium Fluoride 9.3% - AluminiumPhosphate 3.8% - Aluminium Fluoride 1.6%

Cause of angular cheilitis:105.

Loss vertical dimension Pt have complete denture. ***a.

Autoimmune factors.b.


35 of 84 14-May-13 2:46 AM

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MA 64:2 31-yaM-41 48 fo 63

: Dental secrets

2 1

After etch enamel and bond it with 5th generation the strength of?109.

5-10Mp.a.

25Mp.b.

30Mp.c.

100Mp.d.

35

Provisional luting cement: 110.

Prevent restoration from dislodgement. *** a.

Sealing b.

Planning and Making Crown and Bridges page 134 .

Thickness of luting cement: ??111.

100 micrometera.

40micro meterb.

1mmc.

"http:/tdc.thailis.or.th/tdc/browse.php?Option=show&browse_type=title&titleid=160951&display=list_subject&q=Adhesives" http: //tdc.thailis.or.th/tdc/browse.php?Option=show&browse_type=title&titleid=160951&display=list_subject&q=Adhesives

40 .

15-25 5 1-2 .


37 of 84 14-May-13 2:46 AM

.

-Cements for luting have desired film thickness of 15: 25 microns.-Cavity Liners(either solution or suspension liners) have a desired film thickness of 5 microns-Bases have a final application thickness of 1-2mm(they may be thicker depending on the amount of dentinthat may be destroyed)Source:Dental Decks Part 2,2007-2008 page2072 The maximum allowable thickness is 25 m (ADA specification No. 96)Dental CementsThe low 12-micron film thickness is ideally suited for luting applications

Zinc phosphate cement:112.

Mechanical attachment ***a.

Chemicalb.

Traditional Glass ionomer:113.

Mechanical bonding.a.

Acid-base reaction ***b.

-Mechanical chemical bonding.c.

Dental Decks - page 2060 .

Pontic design of an FPD:114.

Same size buccolingually of the missing tootha.

Smaller than missing buccolingually. ***b.

Wider buccolinguallyc.

None of the above d.

.


38 of 84 14-May-13 2:46 AM

Maryland bridge:115.

Use with young.a.

To replace single missing tooth. ***b.

Rigid palatal strap major connector. The material of construction is.co-crGold ti.gold ...wrought wire

1.

44. Zinc phosphate cement and polycarboxylic cement both havea. Zinc oxide particles. ***b. Silica quartz particlesc. Polyarcyilic acidd. Phosphoric acid

90 % 10 %

52. GIC compared to composite:a. Increase linear coefficient of Thermal Expansion

B. More wear resistantc. Less solubled. Stiffe. Polymerization shrinkage ***

: ) ( .

67. Which material has best biocompatibility Intraorally:a. Cobalt chromiumb. Titaniumc. Nickle chromiumd. Gold .... Palladium

69. Indirect retainers mostly needed:a. Class VIb. Class I ***c. Class IIId. Class III with modification


39 of 84 14-May-13 2:46 AM

70. Porcelain teeth in complete denture opposing natural teeth are not preferred due to:a. Increase occ load on natural teethb. Wear of natural teeth ***c. Clicking during mastication

71. Which of following resto more likely to cause wear to opposing:a. Compositeb. Goldc. Porcelain ***d. Amalgam

73. In restoring lost tooth, which is least important:a. Estheticb. Pt demand ***c. Functiond. Arch integrity and occlusal stability

Minimum thickness of noble metal crowna-.1 mmb-.5 mm ***c-1 mmd- 2 mm

Dental deck page 441

The necessary thickness of the metal substucture is 0.5 mmthe minimal porcelain thickness is 1.0 - 1.5 mm

1. Arrange the steps [ca(oh)2 placing varnish-base amalgam"Art & Science - page 171"

Dental Decks - page

10. Soft palate falls abruptly facilitate recording post dam, falls gradually make recording post dam difficult.two statement true.two false ***.first true, second false.first false, second true

" : " 2006

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40 of 84 14-May-13 2:46 AM

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MA 64:2 31-yaM-41 48 fo 14

d-brittleness

ToughnessIt is defined as the amount of energy per volume that a material can absorb before rupturing.Toughness - Wikipedia, the free encyclopediaThe ability of a metal to deform plastically and to absorb energy in the process before fracture is termedtoughness.Toughness

587. Patient is diagnosed for ceramometal full veneer. You plan to use epoxy

Resin >>>>>>missing text>>>>>>>, what's the best impression material to be used :

A. Poly ether.

B. Poly sulfide.

C. Agar agar.

D. Irreversible hydrocolloid.

Q27) the impression material of choice when we want to take impression for epoxy resin pin is:a) Polysulfide. ***B) Polyether.C. Agar agar.

D. Irreversible hydrocolloid.

Impression material cause bad taste to patienta-poly sulfide. ***b-polyether.c-additional silicond- alginate


42 of 84 14-May-13 2:46 AM

Dental terminology

.

27-The impression used for preliminary impressions or study casts is:

Agar agar.1.

Silicon.2.

Alginate. ***3.

None.4.

Pt with complete denture come to your clinic, complaint from his dry mouth, the proper medicine is:1. Anti diabetic medicine.2. Anticordial. ***3. Steroid.

Drug used to decease saliva during impression taking is:1. Cholinergic.2. AntiCholinergic. ***3. Antidiabetic.4. Anticorticosteroid

http://en.wikipedia.org/wiki/Atropine

Atropine: It is classified as an anticholinergic drug

Injections of atropine are used in the treatment of bradycardia (an extremely low heartrate), asystole and pulseless electrical activity (PEA) in cardiac arrest. This works because the main action ofthe vagus nerve of the parasympathetic system on the heart is to decrease heart rate. Atropine blocks this actionand, therefore, may speed up the heart rate.

Atropine's actions on the parasympathetic nervous system inhibits salivary, sweat, and mucus glands.

Atropine induces mydriasis by blocking contraction of the circular pupillary sphincter muscle, which is normallystimulated by acetylcholine release

And


43 of 84 14-May-13 2:46 AM

Dental Decks - page 2012 - 2192

Scopolamine, atropine and benztropine are anticolinergic drugs. They decrease the flow of

And

salive.Cholinesterase inhibition is associated with a variety of acute symptoms such as nausea, vomiting, blurredvision, stomach cramps, and rapid heart rate.

:

- Cholinergic

- anticholinergic

- .

Minimal facial reduction when preparing for veneers:a. 0.3 mmb.03-0.5 mm ***c. 1-1.5 mm

116.

Dental secrets 0.5 0.7 .

"Operative Dentistry A Practical Guide to Recent Innovations - page 83"

The facial enamel is usually reduced by 0.30.5mm, but where the underlying tooth is severely discolored,reduction should be 0.7mm.

when removing lower second molar:a- occlusal plane perpendicular To the floorb- buccolingual direction to dilate socket. ***c- mesial then lingual

117.

The best material for taking impression for full veneer crowns:a) poly vinyl sialoxane (additional Silicone)***

118.

Stock trays compared to Custom trays for a removable partial denture impression119.

A. Custom trays less effective than stock trays


44 of 84 14-May-13 2:46 AM

B. Custom trays can record an alginate impression as well as elastomeric impression

C. Custom trays provide even thickness of impression material. ***

D. All of the above

Which type of burs is the least in heat generation:a) diamondb) carbide ***c) titanium

120.

"

1-

2-

: ). )"more heat generated in diamond bursdental secrets: page 200

Pt. Wears complete denture for 10 years & now he has cancer in the floor of the mouth. What is the firsquestion that the dentist should ask:a- does your denture is ill fittedb- smoking. ***+ (80% of the cancer of the floor of the mouth is caused by smoking)c- Alcohold- does your denture impinge the o.mucosa. *** (traumatic cause)

121.

Screening Oral Cancer - Prepared by Bruce F. Barker, D.D.S. and Gerry J. Barker, R.D.H., M.A.

University of Missouri-Kansas City School of Dentistry

The most frequent cause of porosity in a prcelain restoration isa- moisture of contaminationb- excessive firing temperaturec- excessive condensation of the porcelaind - inadequate condensation of porcelain***

122.


45 of 84 14-May-13 2:46 AM

Dental decks 442

A compound fracture is characterized bya-many small fragmentsb -a star shaped appearancec- an incomplete break in the boned- commuication with oral cavity***Oxford Handbook of Clinical Dentistry - 4th Ed. (2005)- page498in common with all fracture they can be grouped into simple (closed linear fracture) compound (opento mouth or skin

123.

And:

" Peterson's Principles of Oral and Maxillofacial Surgery 2nd Ed 2004 page409"

65 years old black man wants to have very white teeth in his new denture what should the dentist do:a- Put the white teethb- Show the patient the suitable color first then show him the white one.c- Convince him by showing him other patients photos.d- Tell him firmly that his teeth color are good.

124.

Or

- Do not show white teeth

Complete Denture 17th Ed page 73-74

Often a short informative talk using some of the tooth manufacturer's (or preferably your own) "before andafter" photos can be very effective in motivating patients to accept a more natural tooth selection.

SHADE SELECTION:

The shade is selected with the Portrait shade guide. There are 24 shades; enough to fulfill the colorrequirement of any denture patient. The large selection seems confusing but you will soon note that certainshades will be used the most. Shades A,B,C, & D (16) are the most useful and are called characterized shadesas they are a subtle mix of many shades. The last 8 are the Bioform shades, B59-882, and are notcharacterized and do not look as natural. They are included as Bioform teeth and shades have been sold formany years and it's often necessary to match them.

For youthful patients, use lighter shades with a bluish incisal.1.

For older patients, use a darker shade with mostly body color.2.

If the patient has dark hair, brown eyes, and dark skin, darker shades with more yellow and brown willlook more natural. 'This rule does not apply for Black patients as they often have very white teeth.

3.

If the patient has blue eyes and fair skin, use lighter shades with more gray.4.


46 of 84 14-May-13 2:46 AM

Consider the patient's desires: Many patients have very definite ideas on tooth color and will often notaccept the above guidelines. Don't let the patient get a hold of the shade guide; many will select thepearly white A1 !! Select a shade that you think is suitable and let them make the final choice.

5.

Consider the patient's old denture. Do they like the color of the teeth? If they think the color of the olddentures teeth were satisfactory, match them closely. Keep in mind that teeth discolor and othermanufacture's shades may be somewhat different.

6.

:

" "

.

.

.

Patient with comp. denture pronouncing F as a V125.

anterior teeth are upward from lip line. ***

dental decks II - page 396

Placement of maxillary anterior teeth in complete dentures too far from superiorly and anteriorly might resultin difficulty in pronouncing F and V sounds.

pt have a complete denture came to the clinic ,tell you no complaint in the talking ,orin the chewing ,but when you exam him ,you see the upper lip like too long ,deficient in themargins of the lip, reason is?A)deficiency in the vertical dimensionalb)anterior upper teeth are short. ***c)deficient in vit B

126.

Knife ridge should be tx with:1/relining soft material2/ maximum coverage of flange. ***3/ wide occ. Table


47 of 84 14-May-13 2:46 AM

4/all


If you are fibrating mandibular complete denture for with a patient with knife-edge ridge, you need maximalextension of the denture to help distribute the forces of occlusion over a large area.

Occlusal splint device:1/ used during increase vertical dimension2/allative muscle of mastication. ***3/ occlusal plane CR/CO4/ALL

127.

What kind of suture used under the immediate denture:1/ horizontal matters suture2/ vertical matters suture3/ interrupted suture4/ continous locked suture. ***

128.

Provisional restoration for metal ceramic abutment isa) aluminum sheetb) stainless steel crownc) znod) tooth colored polycarbonate crown***

129.

A completely edentulous patient, the dentist delivers a denture in the 1st day normally, 2nd day thepatient returns unable to wear the denture again, the cause is:a) Lack of Skill of the patientb) Lack of Frenum areas of the Complete denture.

130.

How can you alter the sitting time for alginatea)alter ratio powder water ***b)alter water ratioc)we cant alter itd)by accelerated addition

131.


48 of 84 14-May-13 2:46 AM

Dental decks page 672

The best method to control the gelation time (setting time) is altering the temperature of the water used in themix.Changing the water/powder ratio also alter the gelation time but these method also impair certain properitiesof the material. Too little or too much water will weaken the gel.Undermixing may prevent the chemicalaction from occuring evenly;overmixing may break up the gel

Whats the reason of the wax shrinkage upon fabrication of the bridge/crown132.

Doing CANTILEVERS, we consider all of the following EXCEPT:a) small in all diametersb) high yield strengthc) minimal contactd) small occlosogingival length. ***

133.

The primary source of retention of porcelain veneer1_mechanical retention from under cut2_mechanical retention from secondary retentive features3_chemical bond by saline coupling agent4_micromechanical bond from itching of enamel and porcelain

134.

49) patient who has un-modified class II kennedy classification, with good periodontal condition andno carious lesion the best clasp to use on the other side a) reciprocal clasp (aker's clasp). ***b) ring claspc) embrasure claspd) ...----

135.

Edentulous pt cl II kenndy classification 2nd premolar used as abutment when we surving we foundmesial under cut wt is the proper clasp used:1/wrought wire with round cross section2/ wrought wire with half round cross section3/cast clasp with round cross section4/ cast clasp with half cross section

136.

A removable partial denture patient, Class II Kennedy classification. The last tooth on the left side isthe 2nd premolar which has a distal caries. Whats the type of the clasp you will use for this premolar:a) gingivally approaching clasp. ***b) ring clasp

137.


49 of 84 14-May-13 2:46 AM

Patient come to your clinic complaining that the denture become tight, during examination you noticenothing, but when the patient stand you notice that his legs bowing (curved). What you suspect:a) Pagets disease. ***b) .xc) .x

138.

Q9) Patient come to the clinic with ill-fitting denture, during examination you notice white smallelevation on the crest of the lower ridge, what will you tell the patient:a) This lesion needs no concern and he should not worry.B) The patient should not wear the denture for 2 weeks then follow up. ***c) x

1.

Patient complains from pain in TMJ. During examination you noticed that during opening of the mouthmandible is deviate the right side with left extruded. Diagnosis is:a) Condylar displacement with reduction.B) Condylar displacement without reduction. ***C) .xd) x

139.

Pt. Presented to u complain of click during open and close. Thers is no facial asymmetry EXCEPTwhen opening What is the diagnosis:1-internal derangement with reduction. ***2-internal derangement without reduction3-reumatoid arthritis4-,,,,,,,

140.

1 Disc dislocation with reduction

)click( Disc dislocation without reduction click

To hasten Zinc Oxide cement, you add:a) Zinc sulfide.B) Barium sulfide.C) Zinc acetate. ***

141.

D) Barium chloride.Oxford Handbook of Clinical Dentistry - 4th Ed. (2005) - page 770"Journal of Dental Research"


50 of 84 14-May-13 2:46 AM

Advantage of Wrought Wire in RPD over Cast Wire:a-Less irritation to the abutment.

142.

Why we use acrylic more than complete metal palate in complete denture:- Cant do relining for the metal. ***

Relining of denture:- remove all or part of fitting surface of the denture and add acrylic- add acrylic to the base of the denture to increase vertical dimension. ***

143.

Rebasing of Complete Denture mean:a-Addition or change in the fitting surfaceb-Increasing the vertical dimensionc-Change all the fitting surface. ***

144.

: 401

Rebasing is replacement of most or all of the denture base.

.

Color Stability is better in:a-Porcelain. ***b-Compositec-GIC

145.

when all the teeth are missing EXCEPT the 2 canines , according to kennedy classification it is:a- Class I modification 1. ***

146.

) (

Pontics are classified according to their surface toward the ridge of the missing tooth ,...............................

A-Both statment are trueb-both are falsec-1st is true ,2nd is falsed-1st false , 2nd true

147.


51 of 84 14-May-13 2:46 AM

Bone graft material from site to another site in the same persona-allograftb-auto graft ***c-alloplastd-xenograft

Energy absorbed by the point of fracture calleda-ultimate strenghb-elastic limitc-toughness ***d-britlness

148.

ToughnessIt is defined as the amount of energy per volume that a material can absorb before rupturing.Toughness - Wikipedia, the free encyclopediaThe ability of a metal to deform plastically and to absorb energy in the process before fracture is termedtoughness.Toughness

best stress transfer under amalgama-with thin base layer.b-with thick base layer. ***c-if put on sound dentin.

149.

Tooth with full crown need RCT, you did the RCT through the crown, what is the best150.

Restoration to maintain the resistance of the crown:

A) Glass ionomer resin with definite restoration.

23/ wax properties are:1/ expansion2/ internal stress

151.

: :

.

old pt came to replase all old amalgam filling he had sever occlusal attriation the best replacement is:1/ composite

152.


52 of 84 14-May-13 2:46 AM

2/ amalgam3/ cast metal restoration 4/ full crowns. ***

340 5

instrument which we use to make groove in the wax isCurver

153.

After u did upper& lower complete denture 4 old pt. He came back 2 the clinic next day complainingof un comfort with the denture. After u re check ,no pain, good occlusion, good pronunciations , but unotice beginning of inflammation in the gum and outer margins of the lips , u will think this is due to:1- xerostomia.2-vit-B deficiency

154.

Xerostomia can cause difficulty in speech and eating. It also leads to halitosis and a dramatic rise in thenumber of cavities, as the protective effect of saliva's remineralizing the enamel is no longer present, and canmake the mucosa and periodontal tissue of the mouth more vulnerable to infection

Put separating medium.Wait. ***put varnish.

155.

:

.

( )And


"Galvenic shock: generally it gradually subsides and disappears in a few days"

51-colour of normal gingiva in interplay between:Keratin- b.v. melanin- epithelial thickness


53 of 84 14-May-13 2:46 AM

Pt has bad oral hygine and missing the right and left lateral insicor what ttt1_implant2_rpd3_conventional fpd4_Marylad bridge. ***"Summery of Operative dentistry page 44"

Small occlusal forces (adhesive bridges in bruxist patients or when replacing maxillary canine have poorresults) Intermediate restoration. Missing lateral incisors. Virgin abutment teeth. Favorable occlusalscheme (deep overbite unfavourable, Class III occlusion favourable) Splinting teeth.

surgical interference with edentulous ridge fora-good retention, stability and continuous uniform alveolar ridge. ***

---

.In FPD in upper posterior teeth we should have gingival embrasure space to have healthy gingival so thecontact:-in the middle-depend in the opposing occlusion

8.Bonding agent for enamel we use:-unfilled resin. ***-primer & adhesive bonding agent.-resin dissolve in acetone or alcohol.-primer with resin modified glass ionomer.

Dental secrets page 188

1- The etchant: phosphoric acid, nitric acid, or another agent that is used to etch enamel and/or preconditionthe dentin.

2- The primer: a hydrophylic monomer in solvent, such as hydroxymethalmethacrylate. It acts as a wettingagent and provides micromechanical and chemical bonding to dentin

3- The unfilled resin is then applied and light or dual-cured. This layer can now bond to composite, pretreatedporcelain luted with composite, or amalgam in some products.

. Cast with (+ve) bubble b/c of:- Mixing stone- Voids in impression when taken by the dentist*.-pouring-using warm water when mixing ston.


54 of 84 14-May-13 2:46 AM

.most important criteria for full ceramic FPD:-high compressive strength. ***- High tensile strength.

Restorative dental materials 2002 page 5Because ceramics are stronger in compression than in tension, this property is used to advantage to provideincreased resistance to shattering.

19- Balance occlusion should be utilize in natural dentition. & may all or some of the teeth contact in bothside regardless where mandible move.-.1st true & 2nd false- 1st false & 2nd true- both false- both true

20. Balance occlusion in complete denture help in:-retention- stability &..-

21. Reciprocal arm in RPD help to resist the force applied by which parts:-retentive arm. ***- guide plane and

Material which used for flasking complete denture:- plaster. ***- stone-refractory

The best method for core build up is:

1. Amalgam. ***

2. Compomer.

3. Glass ionomer.

http://dfd.atauni.edu.tr/UploadsCild/files/2007-1/2007_1_4%20.pdf

light-cure composite resin (President) and amalgam (Cavex avalloy) were statistically different than the othermaterials tested. They are stronger than compomer followed by resin modified glass ionomer andconventional glass ionomer core materials.

Q- best core material receiving a crown on molar:


55 of 84 14-May-13 2:46 AM

a)amalgam. ***b)reinforced glass ionomer.d)compositeOxford Handbook of Clinical Dentistry - 4th Ed. (2005) page 158Direct method Pre-formed posts are cemented into one or more canals. Amalgam may also be Packed into thecoronal aspect of the root canals (Nayyar core technique) and an amalgam core Built up, which is thepreferred technique. Resin modified GI or resin composite may also be used.

These materials have the advantage that the preparation can be completed at the same visit. A Dentineadhesive system should be used with resin composite to enhance retention.

Fundamentals of fixed prosthodontics page 185

composite resin cores exhibit greater microleakage than do amalgam cores,29 and they are not asdimensionally stable as amalgam in an vitro study. crowns made for teeth with composite resin cores failed toseat by 226 um more than crowns made for teeth with amalgam cores after immersion in body-temperaturenormal saline solution for 1 week. The surface of a composite resin core is affected adversely by exposure tozinc oxide-eugenol temporary cement,31 although that does not seem to have a negative effect on the tensilestrength of the final crown.

the favored relationship in case of fabrication of a lower class 1 RPD opposing a natural dentition is1- prognathism2- working side3- balancing side4- none of the above

Regardless of the method used in creating a harmonious

functional occlusion, an evaluation of the

existing relationships of the opposing natural teeth

must be made and is accomplished with a diagnostic

mounting. This evaluation is in addition to, and in

conjunction with, other diagnostic procedures thatcontribute to an adequate diagnosis and treatment

plan.

Diagnostic casts provide an opportunity to evaluate

the relationship of remaining oral structures

when correctly mounted on a semiadjustable articulatorby use of a face-bow transfer and interocclusal

records. Diagnostic casts are mounted in centric


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relation (most retruded relation of the mandible tothe maxillae) so that deflective occlusal contacts canbe correlated with those observed in the mouth.

Deflective contacts of opposing teeth are usually

destructive to the supporting structures involved and

should be eliminated.

) best material for major connector.Gold wrought wirechrome cobalt ***gold palladiumtitanium

41) during 3/4 crown preparation on premolar, bur used to add retentive grooves is:radial fissure

42) on a central incisor receiving a full ceramic restoration, during finishing of theshoulder finish line subgingivally

Diamond end cutting

Pt construct for him a complete denture after few days he came to u complaining from pain & white spots onthe residual ridge do relief in that area & give him ointment & after few days he came again complaining thesame but in another area the main cause is :a. Uneven pressure on the crest of alveolar ridge. ***b. Increase vertical dimension---

After final inlay cementation and before complete setting of cement we should:a-remove occlusal interferencesb-burnishing of peripheries of restoration for more adaptation. ***c-lowering occlusal surface

"Pickard's Manual of Operative Dentistry Eighth edition OXFORD page 186"It is easier to remove excess cement before it finally sets. Once the cement is hard the rubber dam is removedand the occlusion checked with articulating paper and adjusted with fine diamond burs.


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Patient have a complete denture come to your clinic he complain of gagging he wear the denture for 5 yearshe feel the gagging in the first few days and it disappear what is the cause:1. Extend of the upper denture.2. The patient has sensitivity to gagging.

17) patient with 5 years old denture has a severe gag reflex , upon history he says he had the same symptomsin the first few days of the denture delievery and it went all alonepatient has severe gag reflexpatient has underlying systemic condition. ***denture is overextended----

20 Female come need to endodontic for central insical ,and have media composite restorations in the mesialand distal walls ,and have attrition in the insicial, edge the best restoration?1. Jacket crown.2. Full crown. ***3. Metal crown.

Completed in centric occlusion is normal but in eccentric occlusion the lower ant teeth & upper ant areinterfere with contact wt should be do:1/reduction of mand incisor2/'' '' max ''3/reduction of lingual inclination of max incisior4/'' '' '' '' '' '' mand ''

Pt need complete dt, when u did the examination u notice the max tubersity will be interfere with dt1/need 12 no blade to be extention. ***2/partial thickness flap extend buccal & palatal3/suture under tension

Peterson's Principles of Oral and Maxillofacial Surgery 2nd Ed 2004 page 169

Tuberosity Reduction:

Excesses in the maxillary tuberosity may consist of soft tissue, bone, or both. Sounding, which is performedwith a needle, can differentiate between the causes with a local anesthetic needle or by panoramic radiograph.Bony irregularities may be identified, and variations in anatomy as well as the level of the maxillary sinuses


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can be ascertained. Excesses in the area of the maxillary tuberosity may encroach on the interarch space anddecrease the overall freeway space needed for proper prosthetic function. Access to the tuberosity area can beobtained easily using a crestal incision beginning in the area of the posterior tuberosity and progressingforward to the edge of the defect using a no. 12 scalpel blade. Periosteal dissection then ensues exposing theunderlying bony anatomy. Excesses in bony anatomy are removed using a side-cutting rongeur

10- for recording of vertical dimention we useWillis Gauge. ***caliper.

Face bow

Oxford Handbook of Clinical Dentistry - 4th Ed. (2005) page 194Resting face height is assessed using:

A Willis gauge, to measure the distance between the base of nose and the underside of the chin. Is onlyaccurate to 1 mm.

Spring dividers, to measure the distance between a dot placed on both the chin and the tip of the patient'snose. This method is less popular with patients and is C/I for bearded gentlemen (or ladies!). The patient's appearance and speech.

Questions and Answers for Dental NursesWillis gauge is used to record the occlusal face height of the the patient.


A face-bow is a caliper-like device used to record the patient's maxilla/hinge axis relationship (opening andclosing axis). It is also used to transfer this relationship to the articulator during the mounting of the maxillarycast.

15)what name of bur used in proximal surface of laminate veneer???Radialdimound. ***fissure

http://www.brasselerusa.com/documents/Nixon_Porcelain%20Veneer%20II.pdf

The facial depth cuts are removed with the 850-014 diamond bur, and the long axis of the diamond bur isrolled into the proximal chamfer area to eliminate any sharp line angles

16)what name of bur use in facial surface of veneer???


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Dimond. ***fissure

http://www.brasselerusa.com/products/display.cfm?zoom=diamonds&id=38

Round-end diamonds create chamfer margin and facial reduction for direct and indirect veneer restorations

18- What type pontic design would you in a patient with a high esthetic demand when preparing teeth number9 11 for a F P D :a- ridge lap or saddle ponticb- An ovate ponticc- modified ridge lap pontic. ***


18.class III crown fracture in child patient the type of pontic.ovate. ***.egg shaped.hygienic.ridge lap

195) Porcelain, highly esthetic, anterior maxilla area, we choose:A) DicorB) in ceram. ***C)impress

Fundamentals of fixed prosthodontics page 436

In-Ceram has been used to fabricate fixed partial dentures, but the manufacturer recommends only short-span(three-unit) anterior restorations.Alumina-reinforced ceramic systems (In-Ceram) significantly improve the light reflection characteristics ofcrowns when compared to conventional metal-ceramic restorations.

However, opaque aluminum oxide diminishes translucency when compared to leucite-reinforced systems(Optec, IPS-Empress). To improve light transmission and reflection in single anterior crowns wheremaximum strength is not required, a magnesium aluminous

spinel may be utilized. The transilluminating qualities seem to be similar to those of natural teeth.


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196) the highest strength in porcelain:A) ZR (zircon) reinforced in ceram. ***

198) Amalgam pain after restoration due to:A) phase 2 gammaB) phase 1 gammaC) zinc containing alloy. ***D) Admix alloy

43. Zinc if added to amalgama. Increase moisture sensitivity and cause expansionb. Increase marginal integrity and longevity than zinc free amalgamc. A. ***d. Be. A+ b.


.

86) silane coupling agent:1/ used with porcelain to enhance wetability of bonding. ***

2/ used with tooth and porcelain.

Oxford Handbook of Clinical Dentistry - 4th Ed. (2005) page 146Remove inlay and clean with alcohol. For porcelain only, place layer of silane coupling agent on fittingsurface.

Etch enamel and dentine (total etch concept). Wash and remove excess moisture, but do not dry.Dental Decks - page 2102

Silane acts as an adhesive between the inert filler and the organic matrix


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342) distal surface for first upper premolar ,contact with the neighbor teeth :A)in the middle with buccal vastness wider than lingual oneB)in the middle with lingual vastness wider than bucccaly one. ***

27-Which tooth require special attention when preparing the occlusal aspect for restoration:a- lower 2ed molarb- lower 1st premolar. ***c- lower 2ed premolard- upper 1st molar


How can u repair fractured rest(in the place where it passes over the marginal ridge of the tooth ) inremovable partial denture?A-spot weldingb-electric solderingc-industrial brazing

d-.......

52 Cavity etching before applying GIC is:1. Polyacrylic acid 10 seconds. ***2. Polyacrylic acid 60 seconds.3. Phosphoric acid 10 seconds.4. Phosphoric acid 60 seconds.

Pt have denture, after 5 year he complain of ulcer and inflammation in lower buccal vestibule. wt is the Dx:1/hypertrophic Frenum. ***2/ epulis fissurment.

65 Patient presented to you after fitting the immediate denture 5 10 months, complaining pain and overtissue in the mandibular, what is the diagnosis:1. Epulis fissurment. ***2. Hypertrophic Frenum.

63. Biological widtha. 1 mm


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b. 2mm ***c. 3mmd. 4mm

28- to design a lingual bar we should determine:a- The inferior border of lingual sulcusb- Superior border of lingual sulcusc- ..

.

The test for testing the bur all the blades of the burs path through 1 point calledronted,12 constidty2 routed and constedetynone of above

The kind of on lay wax used in cast1 braffiene2>>>>>3>>>>>----

The cause of black cast which prevent pickling due toover heatcontaminate with gasincomplete casting----

347) What is the main function of impression tray holes :A)Fixing the Impression material. ***

351) Whats the reason of the wax shrinkage upon fabrication of the bridge/crown :Q-contra indication of implant EXCEPT1_many dental caries. ***2_malignancy3_radiation therapy----


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1- dental implant are successfully with min failure:a-premaxilla area in the upper arch. ***b-posterior area of the maxillary arch.c-mandible between the mental foramen.d-buccal shelf of the mandible.----

354) Whats the best implant type allowing Osseointegration:A) Root-form Endosseous implant. ***

The indications of implantation:

1. Diabetic patient.

2. Loss of one tooth only with the adjecent teeth. ***

399) The best material for taking full crown veneers impression is :A) Poly-sulphideB) Poly-etherC) Irreversible hydrocolloidD) Poly vinyl siloxane (Additional silicone). ***

Dental Decks

406) Preparation of tooth for metal ceramic restoration should be done in:A) two planes. ***A) parallel to long axis

26-Labial reduction for porcelain metal restoration must be:

1 plane for aesthetic.1.


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2 plane by follow the monophology. ***2.

343) preparation for labial surface in one plane in the preparation for metal crown is:A)more retentiveB) less retentive. ***

410) when removing lower second molar :A) occlusal plane perpendicular To the floorB) buccolingual direction to dilate socket.C) mesial then lingual

656. Pt with complete denture complain from tightness of denture in morning then become good this due to

A) relif of denture. *** (because there may be pressure points or areas that the tissues will try to Adjust to itthroughout the day)B)lack of cheeck elastisty (pressure on the flanges displacement of denture)C)poor post dam (no posterior seal displacement of denture)

659. A border line diabetic pt came with denture stomatitis you find abundant debris in the tissue surface areaof the denture>>the proper management is:

A. Systemic antibiotic

B. Topical antifungal. *** (topical + relining with a tissue conditioner + rest of tissues at night +Good oralhygiene)C. Systemic antifungal

D. Topical antibiotic

28-Receiving the impression after removal from the mouth directly:


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It must be disinfected immediately.1.

It must be poured immediately. ***2.

It must be mounted immediately.3.

It must be left for minutes.4.

29-The peripheries of the custom tray should be under extended to all border and clearance from the frenumareas:

2mm. ***1.

4mm.2.

6mm.3.

8mm.4.

31-The goal of making the peripheries of the custom tray under extended to all bordered clearance from thefrenum areas:

To give enough space for the used impression materials to allow border molding the tray. ***1.

To give enough space for the die spacer.2.

To give enough space for the cementation materials.3.

None.4.

34-The base plate could bee made by:

Acrylic plate.1.

Ceramic plate.2.

Wax plate.3.

A and c. ***4.

35-The vertical height of the maxillary occlusion rim from the reflection of the cast is:

12mm.1.

22mm. ***2.


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32mm.3.

42mm.4.

36-The anterior width of the maxillary occlusion rim is:

5mm. ***1.

10mm.2.

15mm.3.

20mm.4.

37-The posterior width of the maxillary occlusion:

8-10mm. ***1.

8-15mm.2.

10-15mm.3.

15-20mm.4.

38-The anterior height of the mandibular occlusion rim is:

6mm.1.

16mm. ***2.

26mm.3.

36mm.4.

39-The posterior height of mandibular occlusion rim is:

Equal to the point representing 1/2 of the height of retro molar pad. ***1.

Equal to the point representing 1/2 of the height of the frenum areas.2.

Equal to the point representing 1/2 of the height of the alveolar ridge.3.


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None.4.

40-To record the occlusal plane in order to:

To determine the amount of space between the mandible and the maxilla which will be occupied by anartificial teeth

1.

To determine vertical and horizontal level of the teeth.2.

A and B. ***3.

None.4.

41-To record the vertical dimension in order to:

To determine the amount of space between the mandible and the maxilla which will be occupied by anartificial teeth.

1.

To determine vertical and horizontal level of the teeth. ***2.

A and B.3.

None.4.

1-The protrusive condylar guidance should be set on the articulator at:

40 degree.1.

50 degree.2.

60 degree.3.

70 degree. ***1.

2-The lateral condylar posts should be set on the articulator at:

Zero degree. ***2.

20 degree.1.


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40 degree.2.

None.3.

3-The incisal guide should be set on the articulator at:

Zero degree. ***3.

20 degree.1.

40 degree.2.

None.3.

4-The primary goal of anterior tooth selection is:

To provide good functional requirements.1.

To satisfy aesthetic requirements. ***4.

To let the patient feel comfortable.2.

None.3.

5-The primary goal of posterior tooth selection is:

To provide good functional requirements. ***5.

To satisfy aesthetic requirements.1.

To satisfy sychological requirements.2.

None.3.

6-You need.to get the teeth shade:

Shade guide. ***6.

Incisal guide.1.

Acrylic teeth.2.


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Porcelain teeth.3.

7-The teeth materials are:

Acrylic teeth.1.

Porcelain teeth.2.

A and B. ***7.

None.3.

8-The width of the lower teeth is:

1/2 of the maxillary anterior teeth in normal jaw relationship.1.1/3 of the maxillary anterior teeth in normal jaw relationship.2.3/4 of the maxillary anterior teeth in normal jaw relationship. ***3.None.4.

9-Generally posterior teeth are classified into:

Anatomy (cusp) teeth.1.

Non-anatomy (cuspless) teeth or flat.2.

A and B. ***3.

None.4.

10-The process of positioning or arranging teeth on the denture base is termed:

Casting.1.

Investing.2.

Setting up. ***3.


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Flasking.4.

11-Important functions must be considered when arranging anterior teeth:

Aesthetics.1.

Incision.2.

Phonetics.3.

All.4.

12-Which surface of the central incisor that contacts the median line:

Distal.1.

Mesial. ***2.

Buccal.3.

Lingual.4.

13-The incisal edge of the maxillary lateral incisor is..above and parallel to the occlusal plane:

1/2 mm. ***1.

1 mm.2.

2 mm.3.

3 mm.4.

14-The long axis of the maxillary cuspid is inclined slightly to the:

Mesial.1.

Distal. ***2.

Buccal.3.

Lingual.4.


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15-It is called .. When the occlusal surfaces of the right and left posterior teeth are on the same level:

Vertical plane.1.

Horizontal plane. ***2.

Compensating curve.3.

All.4.

16-The . Of the maxillary first bicuspid is raised approximately 1/2mm of the ocllusal plane:

Buccal cusp.1.

Lingual cusp. ***2.

Mesial surface.3.

All.4.

17-The long axis of the maxillary first molar is inclined to

Buccal.1.

Mesial.2.

Distal.3.

Lingual. ***4.

18-All maxillary posterior teeth touch the occlusal plane EXCEPT:

First bicuspid.1.

Second bicuspid.2.

First molar.3.

Second molar. ***4.


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19-The distance between the lingual surfaces of the maxillary anterior teeth and the labial surfaces of themandibular anterior teeth is:

Vertical overlap (overbite).1.

Horizontal overlap (overjet). ***2.Occlusal plane.3.

All.4.

20-The distance between the incisal edges of the maxillary and mandibular anterior teeth is:

Horizontal overlap (overjet).1.Vertical overlap (overbite). ***2.

Occlusal plane.3.

All.4.

21-The average distance between the lingual surface of the maxillary anterior teeth and the buccal surface ofthe mandibular anterior teeth is:

1/2mm.1.

1mm. ***2.

2mm.3.

3mm.4.

22-Which tooth of the mandibular anterior teeth that touch the lingual surface of the maxillary anterior teethin normal centric relation?

Central incisor.1.

Lateral incisor.2.

Cuspid (Canine). ***3.

None.4.


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23-The mesial surface of the mandibular lateral incisor contacts:

The mesial surface of the central incisor.1.

The distal surface of the central incisor. ***2.

The mesial surface of the cuspid.3.

The distal surface of the cuspid.4.

24-The tip of cusp of the mandibular cuspid is one above the occlusal plane to establish . Of themaxillary anterior:

Horizontal overlap.1.

Occlusal plane. ***2.

Vertical overlap.3.

All.4.

25-The relation involves the movement of the mandibular to the side either right or left in which the act ofmastication is to be accomplished. Therefore the side to which the mandible moves is called:

Balancing side.1.

Working side. ***2.

Compensating side.3.

All.4.

26-When the mandible moves to the working side, the opposite side cusp to cusp contacts in order to balancestresses of mastication. This relation is called:

Working relation.1.

Balancing relation. ***2.

Occlusal relation.3.

None.4.

27-In order to distribute the primary forces of mastication, to fall within the base of the denture, themandibular teeth are set:


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On the bucal edge of the ridge.1.

On the lingual edge of the ridge.2.

On the crest of the ridge. ***3.

All.4.

28-The mandibular posterior tooth that has no contact with any maxillary teeth during the balancingocclusion is:

First bicuspid. ***1.

Second bicuspid.2.

First molar.3.

Second molar.4.

29-The used device in flasking procedure is called:

Articulator.1.

Separating medium.2.

Flask. ***3.

None.4.

30-We Vaseline the inner surface of the flasks all rounds:

To help in the packing procedure.1.

To separate the models (casts) safety. ***2.

A and B.3.

None.4.


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31-The procedure that follows the flasking procedure is called:

Polishing.1.

Deflasking.2.

Packing. ***3.

Curing the acrylic.4.

33-Teeth selection in setting up teeth gsf is based of these factors:

Shade of the teeth.1.

Size and shape of the teeth.2.

Angle of the teeth.3.

A and B. ***4.

All the above.5.

1- is the art and science of functional, anatomic and cosmetic reconstruction of missing or defectiveparts in the maxilla, mandible or face by the use of non living substances:

Complete denture.1.

Maxillofacial prostheses. ***2.

Orthodontics.3.

Partial denture.4.

2-.. Is the one that provides application and device to restore aesthetic and functional requirements topatients with maxillofacial defects:

Endodontist.1.

Pedodontist.2.

Maxillofacial prosthodontist. ***3.


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Peridontist.4.

3-The objectives of maxillofacial prosthetics:Aesthetic.1.

Functions.2.

Protect the tissues.3.

All. ***4.

4-The type of maxillofacial defects:

Congenital defects.1.

Acquired defects.2.

Developmental defects.3.

All. ***4.

5-Cleft palate, cleft lip, missing ear, prognathism are:

Acquired defects.1.

Congenital defects. ***2.

Developments defects.3.

None.4.

8-Extra-oral restorations are:

Radium shield.1.

Ear plugs for hearing.2.

Missing eye, missing nose or ear. ***3.

All.4.


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