PLATFORM SWITCHING
- 2. 2 PARTS OF AN IMPLANT RESTORATION Abutment Crown Titanium Implant Fitted over the Abutment for a natural appearance. Fitted over the portion of implant that protrudes from the gum line Surgically fused with the jawbone.
- 4. CONTENTS CONCEPT HISTORY CRESTAL BONE LOSS REDUCING CRESTAL BONE LOSS ADVANTAGES LIMITATIONS CONCLUSION
- 5. CONCEPT The use of smaller diameter abutment on a larger diameter implant collar. Shifts the perimeter of the implant- abutment junction (IAJ) inward toward the central axis of the implant. Reduces crestal bone loss. 5
- 6. HISTORY • Accidental finding! • In 1980s, dental implant manufacturers introduced wider diameter implants (5-6 mm). • When introduced matching-diameter prosthetic components were unavailable. • So, they were restored with standard diameter prosthetic components (4.1 mm) Long-term radiographic follow-up of "platform- switched" implants showed Less crestal bone as compared to “platform matched” implants 6 LAZZARA PORTER,GARDNER IN 2005
- 7. HOW PLATFORM SWITCHING REDUCES CRESTAL BONE LOSS? Shifts the inflammatory cell infiltrate inward & away from crestal bone Decreases influence of micro gap on crestal bone Maintenance of biologic width Decreases stress level in peri implant bone 7
- 8. HOW PLATFORM SWITCHING REDUCES CRESTAL BONE LOSS? Shifts the inflammatory cell infiltrate inward & away from crestal bone. Inflammatory cell infiltrate IAJ Platform switching IAJ inward and away from outer edge of implant and adjacent bone Decreasing the effect of inflammatory cells on crestal bone 8
- 9. MAINTENANCE OF BIOLOGIC WIDTH Provides additional horizontal biologic width. Decreases stress level in peri implant bone Platform switching Shifts the stress concentration area away from bone-implant interface Reduce crestal bone resorption 9
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- 11. ADVANTAGES Reduced crestal bone loss Increased implant longevity 11
- 12. LIMITATIONS • Deformation of abutment / screw. • Compromise the emergence profile in esthetic areas. • Under sizing of the components during all phases of the treatment. 12
- 13. CONCLUSION Crestal bone preservation Platform switching limits crestal resorption It maintains the biological width & helps improve esthetics 13
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