Abstract
Aim This study aimed to compare the long-term outcome of implant therapy in partially edentulous patients with severe periodontitis compared to those with no history of periodontitis.
Design Retrospective cohort study.
Cohort selection Eighty-eight patients (34 men and 54 women; age ranging from 28 to 45 years) with severe periodontitis (47 patients with 108 implants) and no history of periodontitis (41 patients with 78 implants) were included in this institutional study. All these cohorts had received implants 6-8 years previously.
Data analysis Probing pocket depth, radiographic marginal bone level and peri-implantitis were the primary outcomes, while bleeding on probing was the secondary outcome. The effect of variables was measured by odds ratio with 95% confidence interval. Both patient-level and implant-level analyses were used to evaluate the association between peri-implantitis and potential risk factors. In addition, the association between probing pocket depth and radiographic marginal bone level with potential risk factors was assessed at implant-level analyses. In contrast, for patient-level data, a positive relationship was assessed with the Chi-square test.
Results Patients with a history of severe periodontitis (OR = 11.13; p = 0.045), implants with a lack (<2 mm) of peri-implant keratinised mucosa (OR = 14.94; p <0.001) and implants placed in bone-grafted sites (OR = 4.93; p = 0.047) were associated with greater risk of peri-implantitis, at 6-8 years post-implant placement. The risk of developing radiographic marginal bone level ≥3 mm was significantly greater (OR = 1.20; p <0.001) in patients with higher full-mouth bleeding scores. The chance of peri-implant bleeding on probing was independently and especially higher in patients who brushed their teeth at most once per day (OR = 3.20; p = 0.04), with higher full-mouth bleeding score values (OR = 1.16; p <0.001) and irregular recall visits (OR = 15.34; p = 0.001).
Conclusion This retrospective cohort study concluded that partially edentulous patients with a history of severe periodontitis were more prone to develop peri-implantitis at 6-8 years post-implant placement.
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Dhingra, K., Jeng, JH. Are partially edentulous patients with a history of severe periodontitis more prone to develop peri-implantitis over the long term?. Evid Based Dent 23, 81–83 (2022). https://doi.org/10.1038/s41432-022-0269-4
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DOI: https://doi.org/10.1038/s41432-022-0269-4
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