Tooth loss during supportive periodontal care: A prospective study Hasan, Fatemah Magán Fernández, Antonio Akcali, Aliye Sun, Chuanming Donos, Nikos Nibali, Luigi Maintenance Periodontitis Prognosis Aim: To assess periodontal stability and the association between tooth- and patientrelated factors and tooth loss during supportive periodontal care (SPC). Materials and Methods: A prospective observational study was carried out on previously treated periodontitis patients followed up for 5 years in SPC. The risk profile (low, moderate, high) of each patient based on periodontal risk assessment (PRA) scoring at baseline was evaluated, and tooth loss rates were analysed. Results: Two hundred patients were included in the study, and 143 had 5-year follow-up data available for analysis. The overall annual tooth loss per patient was 0.07 ± 0.14 teeth/patient/year. Older age, smoking, staging and grading were associated with increased tooth loss rates. Most patients whose teeth were extracted belonged to the PRA high-risk group. Both PRA and a tooth prognosis system used at baseline showed high negative predictive value but low positive predictive value for tooth loss during SPC. Conclusions: Overall, the tooth loss rate of periodontitis patients in this prospective cohort study under SPC in private practice was low. Both tooth-based and patientbased prognostic systems can identify high-risk cases, but their positive predictive value should be improved. 2024-05-15T06:27:55Z 2024-05-15T06:27:55Z 2204-02-26 journal article Hasan, F., Magan-Fernandez, A., Akcalı, A., Sun, C., Donos, N., & Nibali, L. (2024). Tooth loss during supportive periodontal care: A prospective study. Journal of Clinical Periodontology, 51(5), 583–595. https://doi.org/10.1111/jcpe.13943 https://hdl.handle.net/10481/91773 10.1111/jcpe.13943 eng http://creativecommons.org/licenses/by-nc/4.0/ open access Atribución-NoComercial 4.0 Internacional John Wiley & Sons