dental restorations.pptx

Here description about different types of restoration, crown, bridges and veneers has been discussed

1. TYPES OF DENTAL RESTORATION SHRADDHA JOSHI Ph.D. Shalakya ITRA, Jamnagar

2. Restoration are the various ways a dentist can replace or “restore” missing teeth or missing parts of tooth structure. WHAT IS DENTAL RESTORATION??? When are they used or placed ????? Tooth with carious lesion (Cavity) Used for cosmetic reasons to correct aesthetic concerns To replace missing or damaged tooth To repair a broken or cracked tooth Any treatment whose goal is to restore the function, integrity and morphology of missing tooth structure resulting from- caries or trauma

3. RESTORATIONS SEEN ON RADIOGRAPH Metallic and Non-metallic Metallic- Amalgam, gold, stainless steel, chrome, post and core and porcelain-fused-to-metal (PFM) restoration. Non-metallic - Composite resin, porcelain crowns, bridges and acrylic restorations. All dental images should be evaluated while patient is still present. Number of dental materials look very similar on x-ray; therefore, a clinical exam of the patient is needed to gain information necessary to verify what is being seen on the x-ray.

4. AMALGAM RESTORATIONS Common restorative material. Mixture is made of: Silver, mercury, tin. Inexpensive. Less aesthetic material. Absorbs most of the x-ray beams before they reach the receptor. Radio opaque (light or white) on dental x-ray.

5. Amalgam restoration on x-ray Amalgam restoration

6. Amalgam overhangs Extensions of amalgam beyond the crown of the tooth into interproximal region. It is result of improper placement of the amalgam restoration. Material extends beyond the surface. Disrupts the natural cleansing contour of tooth. E asily seen on radiograph. Traps food and bacteria therefore contributes to bone loss. Must be removed.

7. Amalgam fragments and amalgam tattoos Sometimes when the amalgam restoration is being placed- particles fall off and get embedded into the adjacent soft tissue. Soft tissue may discolor overtime- this discoloration is called “amalgam tattoo”. Particles embedded in soft tissue can be seen on radiograph.

8. GOLD RESTORATIONS Not easily distinguished from other metallic restorations on dental x-ray. Radiopaque with smooth contours and regular borders seen on radiograph. Large radiopaque restoration with smooth borders are seen on radiograph- is most likely made of gold. Smooth contours and regular border. Gold restorations may include: crowns, bridges, gold foil, gold inlays and onlays .

9. Types of gold restoration

10. Inlay O nlay Crowns

11. Gold restoration on radiograph

12. GOLD FOIL RESTORATION

13. STAINLESS STEEL RESTORATIONS Are prefabricated. Used as a temporary restoration material. Are thin and donot absorb x-ray radiation, as much as amalgam or gold. Not as densely radiopaque as amalgam or gold. Not contoured well near CEJ. Appear thin or see through on dental x-ray. Donot appear to fit the tooth well.

14. Stainless steel restoration on radiograph

15. PORCELAIN RESTORATIONS Appear radiopaque ; vary in radiographic appearance depending upon whether restoration is all porcelain or PFM style restoration. All porcelain crowns and bridges: slightly radiopaque with thin radiopaque line outlining the prepared tooth; the thin line is the dental cement or adhesive material; Porcelain is a specific type of ceramic. When someone refers to a ceramic crown- the material is almost definitely porcelain.

16. COMPOSITE RESIN MATERIALS

17. Appearance of composite resin material varies on radiograph depending upon the materials used (which company manufactured the resin). Some manufacturers add radiopaque particles to distinguish the composite resin from a carious lesion.

18. SOME OTHER MATERIALS BASE MATERIALS: Includes zinc phosphate cement and zinc eugenol paste. Used as cavity liners to protect the pulp. (placed in the floor of the prep) Afterwards- restorative material is placed over (on top of) based material. Appears radiopaque.

19. POST AND CORE

20. When large part of the tooth’s crown is lost. Due to- progression of dental decay or tooth trauma. Required when inadequate amount of sound tooth tissue left to retain a conventional crown. Tooth must have had root canal treatment. Purpose of the core: Improve crown retention. Purpose of the post: retain the core. Cont ….

21. WHAT IS BRIDGE CROWN VENEER

22. TYPES OF CROWNS

23. TYPES OF BRIDGES Traditional bridge Most common type of dental bridge because of their strength and durability. These involve two dental crowns on either side of the gap and one, two, or three prosthetic teeth that are suspended in the gap. The crowns are anchored to the two teeth on either side of the gap to keep the bridge secured .

24. Cantilever bridge This type of dental bridge is made up of only one dental crown and can replace up to three missing teeth . It isn’t as strong as a traditional dental bridge.

25. Maryland bridge Instead of dental crowns, Maryland dental bridges have wings on either side of the prosthetic teeth. Weakest type of dental bridge, but patients often choose this option because the process of placing the bridge takes less time, is less invasive, and less painful than the other types of bridges.

26. Implant supported bridge Many dentists recommend and prefer implant-supported dental bridges over all other choices. Mainly because they are the most supportive and longest-lasting dental bridge option. Unlike the other options,  implant-supported dental bridges  utilize dental implants instead of crowns. The implants are inserted into the jawbone through the gums and cause the jawbone to regrow. This type of dental bridge will likely last more than 25 years.

27. VENEERS