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Title: Tooth loss in compliant and non-compliant periodontally treated patients: 7 years after active periodontal therapy
Authors: Ng, M.C.-H.
Ong, M.M.-A.
Lim, L.P. 
Koh, C.G.
Chan, Y.H.
Keywords: extraction
periodontal disease
periodontal maintenance
tooth loss
Issue Date: 2011
Citation: Ng, M.C.-H., Ong, M.M.-A., Lim, L.P., Koh, C.G., Chan, Y.H. (2011). Tooth loss in compliant and non-compliant periodontally treated patients: 7 years after active periodontal therapy. Journal of Clinical Periodontology 38 (5) : 499-508. ScholarBank@NUS Repository.
Abstract: Aims: To investigate the incidence and reasons for tooth loss during active periodontal therapy (APT) and periodontal maintenance (PM) in a specialist institution. Material and methods: Retrospective data were collected from 273 patients [all compliers (AC)] and cross-sectional data from 39 patients after discontinuation of PM [non-compliers (NC)] for at least 7 years after APT. Descriptive statistics and regression analysis were performed. A comparison was made between AC and NC. The prognostic factors associated with tooth loss during PM were identified. Results: AC lost 1.3 teeth/patient during APT and 0.9 teeth/patient during PM (mean 10.7 years). Tooth loss due to periodontitis was 0.03 teeth/patient/year. The age of 60 was a significant predictor of tooth loss during PM (odds ratio of 2.1). NC lost 1.1 teeth/patient during APT and 2.7 teeth/patient during discontinuation (mean 9.6 years). Tooth loss due to periodontitis was 0.22 teeth/patient/year, a sevenfold increase (p<0.05) compared with AC. Regression analysis failed to identify any significant predictors for tooth loss during the discontinuation of PM. Conclusions: In this study, the provision of PM led to minimal tooth loss, especially due to periodontitis, for a mean period of 10 years after APT. The completion of APT without PM may predispose patients to lose more teeth compared with patients who undergo PM. © 2011 John Wiley & Sons A/S.
Source Title: Journal of Clinical Periodontology
ISSN: 03036979
DOI: 10.1111/j.1600-051X.2011.01708.x
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