INTRODUCTIONTHE DISCIPLINE OF FIXED

PROSTHODONTICS

COURSE NAME:PROSTHODONTICS I (FIXED PARTIAL DENTURE)

Course Description Study of fixed partial prosthesis considering the

biological requirements for restoring the normal oral functions and aesthetics.

Course Credit: 4 units – 2 units lecture(75%), 2 units laboratory

(25%) Contact Hours:

2 hours lecture/6 hours laboratory per week Pre-requisite:

Dental Material Placement:

2nd year, 1st semester

COURSE NAME:PROSTHODONTICS I (FIXED PARTIAL DENTURE)

Course Objectives: To develop the skills in making accurate diagnosis for jacket

crowns and fixed partial prosthesis and to formulate a concise treatment plan;

To describe the different principles of tooth preparation and the indications and contraindications of the different types of artificial crowns and fixed partial restorations.

Course Outline: Overview of fixed partial prosthesis Diagnosis and treatment planning Principles of tooth preparation Temporary restorations Artificial crowns Fixed partial prosthesis Impression materials Indication of Different Cements Clinical aspects and troubleshooting Principles of occlusion

COURSE NAME:PROSTHODONTICS I (FIXED PARTIAL DENTURE)

Textbook and References: Johnston, Modern Practice in Fixed Prosthodontics,

4th ed.Rosenstiel, Contemporary Fixed Prosthodontics,

latest ed.

DENTISTRY / DEFINED

It is the health science that encompasses the:

1. Study and application of measures designed to prevent the deterioration of oral structures and

2. Use of pertinent clinical procedures to improve the oral health of those treated.

DENTISTRY/ RAMIFICATIONS

1. The relief of pain2. The treatment of oral diseases3. The maintenance of masticatory

efficiency4. The maintenance and or restoration of

the esthetic qualities of the mouth and face.

* outcome

DENTISTRY / FUNCTIONS OF DENTAL PRACTICE

1. Research2. Educational efforts3. Preventive efforts and4. Clinical efforts

So that an ever increasing number of people can avoid the loss of teeth.

combine and coordinate

DENTISTRY / PATIENT’S ROLE IN PREVENTIVE DENTISTRY

If the patient begins coming to the dentist early in life and is convinced of the dividends to be earned from a policy of :

1. Preventive therapy2. Correct oral hygiene and 3. Prompt repair of the tooth when a

carious lesion has penetrated the enamel,

there should be little need later for major restorative operations.

DENTISTRY / DUTY OF THE DENTIST

If a tooth must be lost, it is the duty of the dentist to ---

inform the patient that the space should be filled after surgery (as soon as healing and shaping of the ridge tissue are complete).

The significance of keeping the arches intact must be stressed…

WHY?

DENTISTRY / DUTY OF THE DENTIST

The loss of one tooth can effect changes in:

1. Position of the teeth and

2. contact relationships of all teeth remaining in the mouth.

DENTISTRY / DUTY OF THE DENTIST

Sequelae in the change of tooth position and contact relationship:

CHARACTERISTICS OF AN IDEAL PROSTHESIS

1. Contribute to mastication,2. It should augment the ability of the

patient to enunciate,3. It should restore and preserve contacts

between the abutments and the approximating teeth and also all other teeth in the arch, and

4. It should maintain the positions of the opposing teeth and the health of the supporting structures.

DEFINITION OF TERMS PROSTHODONTICS

Branch of dentistry (It is the health science that encompasses the :

1. study and application of measures designed to Prevent the deterioration of oral structures and

2. use of pertinent clinical procedures to improve the oral health of those treated.)

pertaining to the restoration and maintenance of3. oral function, 4. comfort, 5. appearance, and 6. health of the patient by:7. the restoration of the natural teeth or 8. the replacement of missing teeth and contiguous oral

and maxillofacial tissues with artificial substitutes, orby both.

BRANCHES OF PROSTHODONTICS

1. Fixed Prosthodontics1. Fixed Partial Prosthodontics2. Fixed Complete Prosthodontics

2. Removable Prosthodontics1. Removable Partial Prosthodontics2. Removable Complete Prosthodontics

3. Maxillo-Facial Prosthetics

DEFINITION OF TERMS REMOVABLE PROSTHODONTICS

Branch of prosthodontics concerned with the replacement of teeth and its contiguous structures

1. for edentulous or 2. partially edentulous patients by artificial substitutes that are removable from the mouth.

DEFINITION OF TERMS REMOVABLE PROSTHODONTICS

DEFINITION OF TERMS REMOVABLE PARTIAL DENTURE

Is a prosthesis that replaces tooth/teeth and contiguous structures for partially edentulous patients.

It can be removed from the mouth by the patient during oral hygiene procedures and for other purposes.

DEFINITION OF TERMS FIXED PROSTHODONTICS

Branch of prosthodontics concerned with the replacement or restoration of teeth, or both

by artificial substitutes that are not removable from the mouth.

DEFINITION OF TERMS FIXED PROSTHODONTICS

DEFINITION OF TERMS MAXILLOFACIAL PROSTHETICS

Branch of prosthodontics concerned with the replacement or restoration, or both, of the stomatognathic and associated facial structures

by artificial substitutes that may or may not be removed.

DEFINITION OF TERMS MAXILLOFACIAL PROSTHETICS

DEFINITION OF TERMS PROSTHESIS

Any artificial replacement of a missing body part.

DEFINITION OF TERMS CROWN

An artificial replacement that restores missing tooth structure by

surrounding most or all of the remaining structure with a material such as 1. cast metal, 2. porcelain, or 3. a combination of materials such as metal and porcelain.

It is intended to reproduce 1. both the form and the function of the tooth

and, 2. in some instances, to restore and enhance

the appearance.

DEFINITION OF TERMS FULL VENEER CROWN

An extracoronal restoration that involves all or nearly all of the surface of the clinical crown of a tooth.

DEFINITION OF TERMS PARTIAL VENEER CROWN

A restoration that usually includes all but one surface of the tooth –

hence the frequently heard but not completely accurate term, three quarter crown.

DEFINITION OF TERMS FIXED PROSTHESIS / FIXED BRIDGE

Non removable prosthesis that is - rigidly attached to one or more abutment* teeth *(It is the natural tooth or teeth usually two or more, that supports

the prosthesis and to which it is attached.)

- To replace missing tooth structure- To replace one or more lost or missing teeth.

The term fixed partial denture is sometimes used.

DEFINITION OF TERMS RETAINER

Is the restoration, usually a crown, rebuilding the prepared abutment tooth, by which the bridge is attached to the abutment and to which the pontic is connected.

DEFINITION OF TERMS PONTIC

Is the substitute for the lost tooth, both esthetically and functionally.

DEFINITION OF TERMS JOINT OR CONNECTOR

Is the part of fixed prosthesis that unites the retainer with the pontic or that joins the individual units of the prosthesis.

It may be rigid, as are both the cast and soldered joint, or non rigid as is the dovetail joint.

TYPES OF CONNECTORS Rigid Connectors

Non Rigid Connectors

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RIGID CONNECTORS

KINDS OF RIGID CONNECTORS1. Cast2. Soldered3. Welded

- connectors to be cast are shaped in wax as part of a multiunit wax pattern

- uses intermediate alloy whose melting temperature is lower than that of the parent metal (parts being joined are not melted)

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RIGID CONNECTORS

KINDS OF RIGID CONNECTORS

1. Cast2. Soldered3. Welded

- connection is created by melting adjacent surfaces with heat or pressure.

NON RIGID CONNECTORS

Not rigidly attached to the abutment.

Segmenting of large, complex FPD into shorter components.

Indications : Uncertainty of abutments

prognosis

When it is not possible to prepare 2 abutments with a common pat of insertion

DEFINITION OF TERMS ABUTMENT