Delivering Exceptional Results

Precision-Crafted Equipment

ROBOT Diamond rotary instruments are made in acomputer-automated environment that guaranteesan even distribution of diamond particles onto aone-piece stainless steel shank that providessmooth, effortless, and efficient cutting.

Excellent clinical rating for:*

• Cutting ability• Cutting accuracy• Lack of clogging• Surface integrity

*Research survey conducted by the ADA and published in the Professional Product Review, Vol. 1, Winter 2006.

SN63-0709

Proper tooth preparation, as related to the definitiveform of the restoration and the soft tissues of thepatient, improves the clinician’s ability to deliver an opti-mal result during prosthetic dentistry. The preparationinfluences the appearance of the definitive restorationas well as its long-term prognosis. It also providesroom for the laboratory technician to layer dental porce-lains for natural light transmission, reflection, andabsorption. Furthermore, proper tooth preparationensures the restoration will be able to withstand theocclusal forces of the intraoral environment.

Proper Tooth Preparation

Goals of Tooth Preparation1

• Preserve existing tooth structure• Retention and resistance• Structural durability• Marginal integrity• Preserve the periodontium

1. Shillingburg HT, Hobo S, Whitsett LE, et al. Fundamentals of Fixed Prosthodontics.3rd ed. Carol Stream, IL: Quintessence Publishing, 1997.

Robot® Diamond

SEM of cutting surface shows particle distribution that prevents clogging.

Multiple Use

Shofu ROBOT Diamond rotaryinstruments are fabricated via a proprietary multi-coating technique that uses a specialsurface treatment to improvetheir cutting efficiency, mini-mize clogging, and providedurability in every point.

Diamond-Retaining Layer

Special Coating Layerless than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

Note: Charts are provided for comparison purposesonly and may not represent an exact match.

All Ceramic Preparation Kit17 Robot FG Diamonds for use on anterior, premolar, molar, inlayand laminate veneer preparations.Available in a plastic kit. #0955 ROBOT FG DIAMONDS.0825, 0826, 0833, 0836, 0839,0893, 0896, 0897, 0899, 808V,825V, 826V, 833V, 836V, 839V,893V and 899V

For more than 80 years, Shofu DentalCorporation has been recognized world-wide for its achievements and reputationas an experienced provider of qualitydental materials and equipment, distinc-tions that have resulted in the develop-ment of the ROBOT Diamond.

These products, with clear benefits forrestorative and esthetic procedures, prom-ise to further evidence the commitment of Shofu to successful dental treatment

and patient satisfaction. In the Winter of 2006, the ROBOT Diamond receivedan exceptional rating in a noteworthyresearch study conducted independentlyby the ADA. The multi-coating techniqueused to create the most durable surfacefor the ROBOT Diamonds results in anefficient bur with less clogging. This sat-isfies the precision requirements fortoday’s CAD/CAM technology products.

Indicated for all cavity and crown prep -aration, the ROBOT Diamond rotaryinstruments are made in a computer-automated environment that guaranteesan even distribution of diamond particlesonto a one-piece stainless steel shank.

*Research study conducted by the ADA and pub-lished in the Professional Product Review, Vol. 1,Winter 2006.

—Experience The Difference!

Multilayer technique with specialsurface treatment for durability

Exact, uniform distribution of diamond particles

Durability

Precise operation

Vibration-free action

Benefits

INLAY/ONLAY

Most recently, principles of tooth preparation have been influencednot by the contour of the existing tooth structure but rather by theintended restoration. Whereas bevels and various forms of retentionare necessary for gold restorations, resistance form is generallyunnecessary except for large ceramic or composite onlay restorations.The cavity walls for ceramic or composite preparations are flaredbetween 5 and 15 degrees, and the gingival floor can be prepared witha butt joint.

2

3

Figure 1. The onlay restoration,prepared with a large, taperedflat-ended #0814 ROBOT FGDIAMOND, features roundedinternal line angles and a mini-mum isthmus width of 2.0mm.The minimum depth is 1.5mmin thickness.

4

Inlay/Onlay

Figure 2. Less extensiverestorations can be pre-pared first with a smallerflat-end bur with roundedcorners (#0812 ROBOTFG DIAMOND).

INL

AY

/ON

LA

Y

Figure 3. The smaller #0810ROBOT FG DIAMOND isused to taper proximalareas where access ismore challenging.Preservation of sound toothstructure is a requisitethroughout the approach.

Figure 4. A smooth buttjoint gingival margin shouldbe created through thepreparation sequence.

less than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

SHOULDER MAR

The labial ceramic butt margin wasdeveloped to enhance aesthetics inporcelain-fused-to-metal crownres torations. In essence, this margindesign consists of a full shoulder onthe buccal aspect of the tooth and abeveled shoulder on the lingual side.By creating space for a 2.0mm “cut-back” on the lingual, shoulder porce-lain materials could be used on thissurface and thereby achieve greatertranslucency and light transmissionthrough the laboratory fabricationprocess and delivery.

The least conservative of all margindesigns, the full shoulder margin, isproduced by a broad, flat-endedtapered or cylindrical diamond bur. This

margin is intended to prepare the toothsuch that the gingival floor intersectsthe axial surface of the tooth at a 90-degree angle. Primary indications forthe shoulder margin are all-ceramiccrowns and veneer restorations.

The width requirements, whichrange from approximately 0.5mm to1.0mm for veneer and full-coveragecrown restorations, respectively,ensure that the margin will be welldefined for use in subsequent labora-tory procedures. The completedshoulder margin must be closelyadapted to the cavosurface finish lineof the preparation in order to ensurethe long-term integration of the pros-thetic restoration.

7

8

Figure 5. The shoulderpreparation is frequentlyused for anterior/posteriorcrown and bridge indica-tions and is characterizedby its 90-degree margin.

6

RGINS Shoulder Margins

SH

OU

LD

ER

MA

RG

INS

Figure 7. The incisal aspect ofthe tooth is then preparedfaciolingually using a #0816ROBOT FG DIAMOND toachieve two-plane reductionand smooth, rounded lineangles for the preparation.

Figure 8. The labial ceramicbutt margin is used to improvethe esthetics of the porcelain-fused-to-metal restoration.

less than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

Figure 6. The facial shoulderand lingual beveled margins arerendered with the #0816 and#0845 ROBOT FG DIAMOND,respectively.

KNIFE-EDGE MAR

For periodontally compromised cases where cast-metal or resin-veneeredcrownswill be placed, the knife-edge margin can be used. While an extreme-ly conservative margin, this design should be used in select instances only.Its narrow axial reduction can fade instead of terminating in a definitive finishline, which makes waxing and casting more challenging. As feasible, this mar-gin should be placed where it can be easily cleaned and kept free of debrisby the patient.

11

12

Figure 9. The knife-edge margin is oftenuseful on the lingual surfaces of mandibu-lar posterior teeth, on those with convexaxial surfaces, and on tilted teeth.

10

RGINS Knife-Edge Margins

Figure 11. It is important thataxial reduction yields a defini-tive finish line during toothpreparation.

Figure 12. Achieved with theuse of a #0848 ROBOT FGDIAMOND, the knife-edgemargin permits the develop-ment of an acute margin.

KN

IFE

-ED

GE

MA

RG

INS

less than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

Figure 10. Preservation of thepatient’s existing tooth struc-ture is priority with the knife-edge margin design.

CHAMFER MARGIN

Proper treatment planning is necessary toensure that all aesthetic and functional con-siderations are addressed in the anticipatedmargin design. When designed for place-ment subgingivally, such as for an all-ceramic crown (eg, IPS Empress, Procera)or for the facial margin of a PFM crown,restorations with a thinner margin can bemore predictably created when a deepchamfer is used.

The chamfer margin also permits the clin-ician’s selected impression material to beapplied subgingivally, thus supporting theneeds of the laboratory technician. With adeep chamfer margin, scanning devices(eg, CAD/CAM technology) can also accu-rately record the parameters of the pre-pared tooth and improve the marginaladaptation of the restoration upon deliveryand cementation.

14

15

16

Figure 13. The chamfer margin ispopular for various fixed prostho-dontic restorations and is charac-terized by its tapered shape andsmooth internal line angles.

NS Chamfer Margins

Figure 14. The facial reduction(approximately 1.2mm to 1.5mm)of the tooth surface is completedusing the bullet-shaped #845CROBOT FG DIAMOND.

CH

AM

FE

R M

AR

GIN

S

Figure 15. The bullet-shapedrounded cylinder #0846 ROBOTFG DIAMOND is used for moreextensive reduction of the labialtooth surface; both the #845C andthe #0846 can also be used forgingival curettage.

Figure 16. The occlusal or lingualreduction of 1.0mm to 1.5mm isperformed using a football-shaped#0883 ROBOT FG DIAMOND.Rounded internal line angles com-plete the preparation design.

less than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

MINIMALLY INVASIV

The evolution of adhesive dentistryand restorative materials continues toexpand the treatment options avail-able to today’s dental professionals.Consequently, tooth preservation isbecoming increasingly important aspatients are educated on the advan-tages afforded by maintenance oftheir natural tooth structures.

Shofu has designed a set of theROBOT FG DIAMOND for expresseduse in minimally invasive therapy.

MI-DIA Conventional Diamond Point• 20% harder metal shank• 30% greater flexural strength• Smaller heads• Improved visibility and access

18

19

20

Figure 17. The selection of restorativeprocedures and materials is increasinglybased on the clinician’s ability to visualizethe treatment site and to create a mini-mally invasive preparation design.

Note the differences in sizebetween regular shank andminimally invasive shank.

VE Minimally Invasive

Figure 18. For minute discol-orations in the anterior,beveled preparations are ren-dered to aid in the transition ofthe restorative material.

MIN

IMA

LLY

IN

VA

SIV

E

Figure 19. Minimally invasivepreparation with burs such asthe #0947 ROBOT Diamond isindicated for fractures in ado-lescent teeth with posterioramalgam, enamel, composite,or sealant restorations.

Figure 20. Enamel and dentinare removed selectively withthe MI ROBOT Diamond Bursto facilitate an environmentconducive to resin bonding orsimilar restorative care.

less than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

MULTIPLE USE

The robotic manufacturing process usedto develop the Shofu ROBOT Diamondburs distributes precise amounts of nat-ural diamond particles onto a one-piece,stainless steel shank. In addition to stan-dard grit (R, plain shank), a selection offine grit (F, red-banded shank), superfinegrit (SF, yellow-banded shank), coarsegrit (C, green-banded shank) and super-coarse grit (SC, black-banded shank) areavailable. There are many FG shapesavailable to suit any clinical indication,including PFM crowns and bridges, all-ceramic crowns and bridges,inlays/onlays, composite restorations,porcelain laminate veneers, as well asminimally invasive restorations.

Proper tooth preparation, as related to the definitiveform of the restoration and the soft tissues of thepatient, improves the clinician’s ability to deliver an opti-mal result during prosthetic dentistry. The preparationinfluences the appearance of the definitive restorationas well as its long-term prognosis. It also providesroom for the laboratory technician to layer dental porce-lains for natural light transmission, reflection, andabsorption. Furthermore, proper tooth preparationensures the restoration will be able to withstand theocclusal forces of the intraoral environment.

Proper Tooth Preparation

Goals of Tooth Preparation1

• Preserve existing tooth structure• Retention and resistance• Structural durability• Marginal integrity• Preserve the periodontium

1. Shillingburg HT, Hobo S, Whitsett LE, et al. Fundamentals of Fixed Prosthodontics.3rd ed. Carol Stream, IL: Quintessence Publishing, 1997.

Robot® Diamond

SEM of cutting surface shows particle distribution that prevents clogging.

Multiple Use

Shofu ROBOT Diamond rotaryinstruments are fabricated via a proprietary multi-coating technique that uses a specialsurface treatment to improvetheir cutting efficiency, mini-mize clogging, and providedurability in every point.

Diamond-Retaining Layer

Special Coating Layerless than450,000RPM

less than300,000RPM

less than160,000RPM

less than120,000RPM

Recommended speed:

Grit:

SC=Supercoarse C=CoarseR=Regular F=Fine

SF=Superfine

Note: Charts are provided for comparison purposesonly and may not represent an exact match.

All Ceramic Preparation Kit17 Robot FG Diamonds for use on anterior, premolar, molar, inlayand laminate veneer preparations.Available in a plastic kit. #0955 ROBOT FG DIAMONDS.0825, 0826, 0833, 0836, 0839,0893, 0896, 0897, 0899, 808V,825V, 826V, 833V, 836V, 839V,893V and 899V

Delivering Exceptional Results

Precision-Crafted Equipment

ROBOT Diamond rotary instruments are made in acomputer-automated environment that guaranteesan even distribution of diamond particles onto aone-piece stainless steel shank that providessmooth, effortless, and efficient cutting.

Excellent clinical rating for:*

• Cutting ability• Cutting accuracy• Lack of clogging• Surface integrity

*Research survey conducted by the ADA and published in the Professional Product Review, Vol. 1, Winter 2006.

SN63-0709

Delivering Exceptional Results

Precision-Crafted Equipment

ROBOT Diamond rotary instruments are made in acomputer-automated environment that guaranteesan even distribution of diamond particles onto aone-piece stainless steel shank that providessmooth, effortless, and efficient cutting.

Excellent clinical rating for:*

• Cutting ability• Cutting accuracy• Lack of clogging• Surface integrity

*Research survey conducted by the ADA and published in the Professional Product Review, Vol. 1, Winter 2006.

SN63-0709