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Survival Rates of 8-mm or Shorter Tissue-Level Implants in Function for Up to 228 Months
The International Journal of Oral & Maxillofacial Implants
|December 3, 2020
Summary
Shorter (8 mm or less) tissue-level implants demonstrate high success rates (99.5%) in the posterior maxilla and mandible. This retrospective study confirms their viability as a treatment option when specific protocols are followed.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Prosthodontics
Background:
- Advancements in surface technology and osseointegration understanding enable shorter dental implants.
- Shorter implants offer potential benefits, particularly in the posterior maxilla and mandible.
- Tissue-level implants are increasingly utilized in diverse clinical scenarios.
Purpose of the Study:
- To evaluate the success rates of shorter (≤8 mm) tissue-level implants.
- To assess implants with a minimum functional duration of 60 months.
- To analyze implant performance in the posterior maxilla and mandible.
Main Methods:
- Retrospective analysis of 4,251 tissue-level implants (≤8 mm) restored with single crowns.
- Implants placed between January 1, 1998, and December 31, 2012.
- Assessment of functional time, peri-implant crestal bone stability, and success metrics.
Main Results:
- Cumulative success rate of 99.5% across all evaluated implants.
- Posterior mandible: 99.3% (regular-neck) and 99.7% (wide-neck) success rates.
- Posterior maxilla: 97.8% (regular-neck) and 99.2% (wide-neck) success rates.
Conclusions:
- Shorter (≤8 mm) tissue-level implants are a viable option for the maxilla and mandible.
- Successful outcomes depend on adherence to specific criteria and protocols.
- Restoration with single abutments and crowns is a key factor in their success.
