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Risk Factors Associated With Early Implant Failure: A Retrospective Review Publisher



Yari A1 ; Fasih P2 ; Alborzi S3 ; Nikzad H4 ; Romoozi E5
Authors
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Authors Affiliations
  1. 1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Kashan University of Medical Sciences, Kashan, Iran
  2. 2. Department of Prosthodontics, School of Dentistry, Kashan University of Medical Sciences, Kashan, Iran
  3. 3. Department of Oral and Maxillofacial Surgery, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
  4. 4. Sub-Department of Operations and Analytics, Department of Management, Faculty of Environment, Science and Economy, University of Exeter, Exeter, United Kingdom
  5. 5. Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences and Department of Periodontology, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Stomatology# Oral and Maxillofacial Surgery Published:2024


Abstract

Purpose: The purpose of this study was to investigate the association between possible risk factors and early implant failure. Patients and methods: This retrospective cohort study included consecutive patients receiving dental implant treatment in a four-year timeframe. Patient-related variables (age, sex, smoking, and systemic disease), local factors (area, reason for tooth extraction, and bone quality), surgical variables (bone augmentation, time of implant placement, staging, and antibiotic prophylaxis), and implant-related factors (brand, length, and diameter) were analyzed. Bivariate analyses and multivariate logistic regression model were used to determine the variables associated with early implant failure. Results: The study group comprised 1323 implants in 738 patients with a mean of 1.8 implants/patient of which, 53 failed in 52 patients in the early stage (before final prosthetic loading). According to the multivariate model, smoking (Odds Ratio=1.836, P=0.031), posterior maxillary region (OR=2.958, P=0.006), implantation in place of teeth extracted due to periodontal problems (OR=2.531, P=0.004), bone type IV (OR=2.881, P=0.008), implant in previously augmented site (OR=2.239, P=0.014), and immediate provisional prosthesis (OR=3.418, P=0.019) were associated with a significantly higher risk of early implant failure. Narrow implants showed a significantly higher risk of early failure in bivariate analyses (P=0.012). However, the effect was no longer significant in the multivariate model (OR=2.322, P=0.068). Conclusion: Early implant failure would be more expected in smokers, posterior maxilla, history of periodontal problems, type IV bone, augmented bone, and immediately loaded cases. © 2023 Elsevier Masson SAS
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