Materials for Inlays, Onlays, Crowns and Bridges
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Chisel Dental Clinic was founded by Dr. Sumanth M. Shetty, MDS Pedodontia, from the esteemed Bapuji Dental College, Davangere, Karnataka, India. He is currently serving as assistant professor within Department of Pediatric dentistry, and also is practicing Implantologist after completing his Implant course from one of the prestigious institutions “Nobel Biocare, Sweden.”
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Materials for Inlays, Onlays, Crowns and Bridges
- 2. Inlay – indirect restoration; occlusal surface excluding cusps Onlay – indirect restoration; occlusal surface plus cusp(s)
- 3. Crown – usually covers the clinical crown of the natural tooth Can create “¾ crowns” Bridge – replaces missing tooth/teeth Abutment vs. Pontic Cantilever, Maryland
- 4. Cantilever Bridge Maryland Bridge
- 5. Dental Ceramics – Porcelains Composites Metals
- 6. Crowns (Anterior – “jackets”) Veneers Fused to metal for crowns & bridges Denture teeth Inlays & Onlays All-porcelain crowns & bridges (without metal substructure)
- 8. Intended for very large Class I or II restorations Applied directly or indirectly Reduces concern of polymerization shrinkage and marginal leakage Composite restoration fully cured outside of mouth Similar to direct composite materials
- 9. The tooth is prepared The prep-site is lined with a lubricant The composite is placed and cured (but not etched, bonded!) Remove the composite filling and finish cure The restoration is cemented into prep at same appointment
- 10. After tooth is prepped, an impression is taken A provisional filling material is placed The impression is sent to lab Lab fabricates the restoration from composite material onto the die The restoration is cured fully The inlay is seated with composite cement at 2nd appointment
- 11. Full metallic crowns, bridges Inlays, onlays Substructure for PFM’s Substructure/framework for partial dentures Temporary crowns (prefabricated)
- 12. Alloys have advantages over pure metals alone: Stronger Harder Easier to fabricate Less expensive Alloys are formed when metallic atoms are dissolved within the atoms and crystals of another metal
- 13. Gold is a soft metal Less gold in alloy improves strength ADA-approved classes based on properties of alloy Mixed with platinum, palladium, copper & silver Gold alloys are expensive
- 14. ULSOOR # 9/1, 2ND FLOOR ARJUN POINT, TANK ROAD, ULSOOR LAKE JUNCTION, ABOVE SHANTI SAGAR BANGALORE-560042, KARNATAKA,INDIA PHONE NO : 080 - 2554 7249 / +91 99003 70009
Notes de l'éditeur
- ADA Classes – Type I & II = softer alloys; used for inlays; Type III = hard alloys; used for crown & bridge; Type IV = extra hard for partial denture frames Since golds are expensive, alternative alloys have been used. Golds give excellent thin, margins and some providers still prefer it for some restorations. In fact, a new PFM has emerged which fuses porcelain to gold for the strength of a metal core but with the better esthetics that a gold core can give over a base metal alloy – this is an expensive alternative that some dentists are choosing again – “Captek” (Show picture)