indirect restorations

explained with Limited matter moreover I have included all the images. if you go through a standard textbook and referred to this PPT it will help you so much I hope It helps you. ask me for the books details.

1. Good morning

2. INDIRECT RESTORATION

3. CONTENTS INTRODUCTION TREATMENT PLANNING PRINCIPLES OF TOOTH PREPARATION INLAYS AND ONLAYS POST AND CORE VENEER CROWNS LAMINATES IMPRESSION MAKING INTERIM RESTORATIONS LUTING AGENTS FAILURES OF INDIRECT RESTORATIONS CONCLUSION REFERENCES

4. INTRODUCTION The damaged teeth are to be restored in their form and function so as to achieve conducive stomatognathic environment. The operator may get confronted with situations where direct restorations are not feasible and advisable because of existing conditions Many a times, certain conditions warrant preparation of the restoration outside the oral cavity. Such restorations are known as ‘Indirect Restorations’

5. TREATMENT PLANNING Product B

6. PRINCIPLES OF TOOTH PREPARATION Permissible occlusal convergence Height of axial walls ( incisal / occlusal -cervical length) Geometric form of the prepared tooth (surface area) Depth of reduction Location and form of finish lines Auxiliary retentive features Assessing final form of the preparation Confirm uniformity of preparation before impression making

7. INLAYS AND ONLAYS INDICATIONS VARIOUS METALS REQUIREMENTS OF DENTAL CASTING ALLOYS CAVITY PREPARATION STEPS

8. INLAYS AND ONLAYS FLARES

9. INLAYS AND ONLAYS RETENTIVE GROOVES BEVELS

10. INLAYS AND ONLAYS

11. ONLAY The inlay, being an intracoronal restoration, may not protect the remaining weak tooth structure, if any. Such restorations, depending upon their buccolingual width , usually exert a wedging pressure outward from the center of the tooth. If more than one-third of cuspal incline planes are involved, the concerned cusp(s) should be covered. The onlays protect the remaining weaker tooth structure from occlusal , laterally and apically directed forces. Cusp reduction- tapered fissure bur 1mm- buccal /lingual 1.5mm- occlusal Chamfer- gold Shoulder- cast metal

12. COMPOSITE INLAYS INDICATIONS CONTRA INDICATIONS CLASSIFICATION CAVITY PREPARATION

13. CERAMIC INLAYS INDICATIONS Isthmus more than 2/3 of intercuspal distance CONTRA INDICATIONS Poor hygiene Insufficient structure Para functional habbits

14. POST AND CORE CLASSIFICATION Walton and Torabinejad According to shape Parallel Tapered According to construction Custom made Preformed According to nature of fit Passive Active According to surface configuration Smooth Serrated Threaded

15. VENEER CROWNS INDICATIONS RC treated Extensive caries Tilted Long span bridge CONTRA INDICATIONS High caries PDL Bruxism Deep bite INDICATIONS Good crown length Thickness Alignment CONTRA INDICATIONS Short Malformed Caries Attrition

16. FULL VENEER CROWNS

17. PARTIAL VENEER CROWNS 3/4 crown 7/8 crown

18. LAMINATES Laminate is defined as a thin slice of acrylic/composite/porcelain fabricated in laboratory and cemented onto the teeth. A veneer is a layer of tooth colored material that is applied to a tooth to restore localized or generalized defects and intrinsic discolorations. The laminate veneer is a conservative esthetic restoration of anterior teeth to mask discoloration, restore malformed teeth, close diastemas and correct minor tooth alignment. Laminate is bonded directly to the prepared tooth.

19. LAMINATES

20. COMPONEERS Componeers are prefabricated composite veneers, especially manufactured in thin shells that can be fixed onto the labial surfaces of teeth.

21. LUMINEERS ADVANTAGES Fast and painless technique Tissue management not required No postoperative sensitivity and pulpal involvement Long-lasting Esthetically pleasing (patient acceptability) No need for provisional restorations Can be placed over unesthetic crown without replacing the same In case patient dislikes, it can be removed and the surface is polished to achieve the same tooth. DISADVANTAGES May appear bulky and Over contouring may harm periodontal tissues The width and length may not be altered significantly Color masking is not proper ultrathin porcelain veneers - bonded directly over the tooth structure to enhance esthetics.

22. IMPRESSION MAKING

23. INTERIM RESTORATIONS INTRA CORONAL PREPARATIONS GP ZOE NON-EUGENOL ZPC PC EXTRA CORONAL PREPARATIONS PREFABRICATED CROWNS Polycarbonate crowns Cellulose acetate crowns Aluminium shell crowns Stainless steel crowns Nickel chromium crowns CUSTOM MADE CROWNS Heat-cure acrylic crowns Self-cure acrylic crowns

24. LUTING AGENTS ZINC PHOSPHATE CEMENT POLYCARBOXYLATE CEMENT GIC RESIN CEMENT

25. FAILURES OF INDIRECT RESTORATIONS Discomfort Loose Restoration Recurrence of Caries Loss of Supporting Structures Degeneration of the Pulp Fracture of Restoration and/or Tooth Loss of Functions Loss of Esthetics

26. CONCLUSION Dentistry has benefited from tremendous advances in technology with the introduction of new techniques and materials. The combination of materials and techniques are now beginning to emerge which aim to exploit the best features of each. There is still considerable space for the improvement of properties and microstructures of materials including a more critical attempt to mimic the structure developed by nature. The search for the ideal restorative material continues …..

27. REFERENCES Operative dentistry: Modern theory and practice – MA Marzouk , I Edition . Sturtevant’s The art and science of operative dentistry - 4th Edition Principles and practice of Operative Dentistry – Gerald T Charbenaeu . Contemporary fixed prosthodontics – Rosensteil,4 th ed. Fundamentals of fixed prosthodontics – Schillingburg,3 rd ed.

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