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. 2022 Jun;52(3):194-205.
doi: 10.5051/jpis.2103020151.

Long-term outcomes after peri-implantitis treatment and their influencing factors: a retrospective study

Sung-Bae Lee  1 , Bo-Ah Lee  1 , Seong-Ho Choi  2 , Young-Taek Kim  3
Affiliations

Long-term outcomes after peri-implantitis treatment and their influencing factors: a retrospective study

Sung-Bae Lee et al. J Periodontal Implant Sci. 2022 Jun.

Abstract

Purpose: This study aimed to determine the long-term outcomes after peri-implantitis treatment and the factors affecting these outcomes.

Methods: This study included 92 implants in 45 patients who had been treated for peri-implantitis. Clinical data on the characteristics of patients and their implants were collected retrospectively. The change in the marginal bone level was calculated by comparing the baseline and the most recently obtained (≥3 years after treatment) radiographs. The primary outcome variable was progression of the disease after the treatment at the implant level, which was defined as further bone loss of >1.0 mm or implant removal. A 2-level binary logistic regression analysis was used to identify the effects of possible factors on the primary outcome.

Results: The mean age of the patients was 58.7 years (range, 22-79 years). Progression of peri-implantitis was observed in 64.4% of patients and 63.0% of implants during an observation period of 6.4±2.7 years (mean±standard deviation). Multivariable regression analysis revealed that full compliance to recall visits (P=0.019), smoking (P=0.023), placement of 4 or more implants (P=0.022), and marginal bone loss ≥4 mm at baseline (P=0.027) significantly influenced the treatment outcome.

Conclusions: The long-term results of peri-implantitis treatment can be improved by full compliance on the part of patients, whereas it is impaired by smoking, placement of multiple implants, and severe bone loss at baseline. Encouraging patients to stop smoking and to receive supportive care is recommended before treatment.

Keywords: Dental implants; Peri-implantitis; Recurrence; Retrospective studies; Treatment outcome.

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Conflict of interest statement

No potential conflict of interest relevant to this article is reported.

Figures

Figure 1
Figure 1. Flow diagram of patient inclusion and exclusion.
Figure 2
Figure 2. Percentage of cases where peri-implantitis progressed after treatment according to the 4 significant influencing factors (patient compliance, smoking status, the number of implants placed in a patient, and marginal bone loss at baseline). ‘n’ is the number of implants in each category.
a)Statistically significant difference (P<0.05).
See this image and copyright information in PMC

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