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Dental implant failure and bone augmentation: A retrospective study.

Georgios S Chatzopoulos1,2, Larry F Wolff1

  • 1Department of Developmental and Surgical Sciences, Division of Periodontology, School of Dentistry, University of Minnesota, 515 Delaware Street SE, Minneapolis, MN,55455, USA.

Journal of Clinical and Experimental Dentistry
|April 3, 2023
PubMed
Summary

Dental implants in augmented bone sites, especially the maxilla, and in smokers, show higher failure rates. Simultaneous placement with ridge augmentation also increases implant failure risk.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Dental Implantology
  • Bone Regeneration

Background:

  • Assessing dental implant failure rates in augmented vs. non-augmented sites.
  • Investigating the association between implant/bone placement timing and failure risk.

Purpose of the Study:

  • To evaluate implant survival rates in augmented bone sites.
  • To identify risk factors for dental implant failure.

Main Methods:

  • Retrospective analysis of 553 dental implants placed in patients over 18.
  • Utilized electronic patient records for data retrieval.
  • Applied Kaplan-Meier plots and Cox regression models for analysis.

Main Results:

  • Overall implant survival rate was 96.9%.
  • Implants in augmented maxillary sinuses (staged or simultaneous) had reduced survival (p=0.018/0.025).
  • Smoking and simultaneous ridge augmentation increased failure rates.

Conclusions:

  • Implants in tobacco users and augmented sites (maxillary sinus, alveolar ridge) have higher failure rates.
  • Simultaneous augmentation and implant placement is a risk factor for failure.
  • Bone grafting procedures require careful consideration regarding timing and patient factors.