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Published on: December 11, 2017
Retrospective study of standard-diameter implants inserted into allografts
Alessandro Viscioni1, Maurizio Franco, Leone Rigo
1Department of Maxillofacial Surgery, Civil Hospital, Castelfranco Veneto, Italy.
Summary
Standard-diameter implants (SDIs) show high survival rates when placed in fresh-frozen bone (FFB). While reliable, fixed restorations may lead to increased marginal bone loss compared to removable dentures.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Oral Surgery
Background:
- Standard-diameter implants (SDIs) have demonstrated excellent clinical outcomes in recent years.
- Limited data exists on the performance of SDIs specifically when inserted into fresh-frozen bone (FFB).
Purpose of the Study:
- To evaluate the clinical outcome of standard-diameter implants (3.75 mm) placed in homologous fresh-frozen bone.
- To identify factors influencing implant survival and peri-implant bone resorption.
Main Methods:
- Retrospective analysis of 133 SDIs inserted into FFB in 41 patients.
- Investigation of patient, anatomic site, implant, and prosthetic restoration variables.
- Statistical analysis using Kaplan-Meier and Cox regression to assess predictors of clinical outcomes.
Main Results:
- A high implant survival rate of 99.2% (1 of 133 lost) was observed.
- No significant differences in survival rates were found across various study variables.
- Crestal bone resorption was significantly correlated with the type of prosthetic restoration, favoring removable dentures.
Conclusions:
- Standard-diameter implants demonstrate high survival and success rates in fresh-frozen bone, comparable to traditional 2-stage procedures.
- SDIs in FFB are a reliable option for dental restoration.
- A higher degree of marginal bone loss may occur with fixed prosthetic restorations compared to removable ones.
