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Materials for Inlays, Onlays, Crowns and Bridges

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

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  1. Materials for Inlays, Onlays, Crowns and Bridges

  2. Review: • Inlay – indirect restoration; occlusal surface excluding cusps • Onlay – indirect restoration; occlusal surface plus cusp(s)

  3. Review: • 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. Review: • Cantilever Bridge • Maryland Bridge

  5. Materials for Indirect Restorations: • Dental Ceramics – Porcelains • Composites • Metals

  6. Uses for Dental Ceramics: • Crowns (Anterior – “jackets”) • Veneers • Fused to metal for crowns & bridges • Denture teeth • Inlays & Onlays • All-porcelain crowns & bridges (without metal substructure)

  7. Preparation of Porcelain:

  8. Composite Inlay Restorations: • 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. Direct Composite Restoration: • 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. Indirect Composite Restoration: • 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. Uses for Metals: • Full metallic crowns, bridges • Inlays, onlays • Substructure for PFM’s • Substructure/framework for partial dentures • Temporary crowns (prefabricated)

  12. Alloys: • 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 Alloys: • 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. Contact Us 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

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