Author ORCID Identifier
Master of Science in Dentistry
Thomas C. Waldrop, D.D.S., M.S.
Janina Golob Deeb, D.D.S., M.S.
Caroline K. Carrico, Ph.D.
Pandora K Lee, D.M.D.
Purpose: Management of peri-implantitis is becoming an increasing component of dental practice. Dental implants can develop peri-implantitis lesions which occur in a non‐linear and accelerating pattern compared to a gradual periodontitis lesion. It is crucial to diagnose and treat this disease early, or ideally prevent it. Contemporary implants have a rough surface texture which is difficult to properly decontaminate as a crucial component for treatment prognosis. Evidence on the long-term effects of Periodontal implant maintenance therapy (PIMT) on implants is limited. This study aims to investigate the effect of periodontal maintenance on peri-implant tissue health.
Methods: A retrospective chart review was conducted at residency clinics on patients who underwent implant therapy with 1-7 years of follow-up. Outcome variables of interest were peri-implantitis and early implant failure. Predictors included PIMT frequency, implant characteristics, and demographics. The associations between implant failure, peri-implantitis, and PIMT frequency were assessed using Fisher's Exact test. The significance level was set at 0.05.
Results: A total of 185 patient records & 501 implants were included in the study. Of those, 29 (6%) demonstrated peri-implantitis, and 22 (5%) had early implant failure. There was a significant association between Periodontal implant maintenance and peri-implantitis (p-value=0.0169). The rate of peri-implantitis was 9% (n=20) for those with no implant maintenance and 3% (n=10) for those with implant maintenance. At the patient level peri-implantitis was 11% for those with no implant maintenance 5% for those with implant maintenance. Early implant failure was also significantly associated with peri-implantitis, with 25% of those with peri-implantitis experiencing early failure compared to 4% of those who did not (p-value=0.0062). PIMT was not significantly associated with early implant failure (p-value=0.4372).
Conclusion: PIMT frequency was associated with implant failure and peri-implantitis in an academic setting, within the limitations of this study.
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