Chatzopoulos GS, Wolff LF. Impact of periodontal maintenance frequency on inflammatory and structural parameters: A propensity score-matched cohort study. Med Oral Patol Oral Cir Bucal. 2026 Jul 1;31 (4):e622-30.

doi:10.4317/medoral.28133

https://dx.doi.org/doi:10.4317/medoral.28133

1. Tonetti MS, Greenwell H, Kornman KS. Staging and grading of periodontitis: Framework and proposal of a new classification and case definition. J Periodontol. 2018;89:S159-S172. https://doi.org/10.1002/JPER.18-0006 PMid:29926952 PMCid:PMC8297801

2. Chapple IL, Mealey BL, Van Dyke TE, et al. Periodontal health and gingival diseases and conditions on an intact and a reduced periodontium: Consensus report of workgroup 1 of the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions. J Periodontol. 2018;89:S74-S84. https://doi.org/10.1002/JPER.17-0719 PMid:29926944

3. Manresa C, Sanz-Miralles EC, Twigg J, Bravo M. Supportive periodontal treatment (SPT) for maintaining the dentition in adults treated for periodontitis. Cochrane Database Syst Rev. 2018;1:CD009376. https://doi.org/10.1002/14651858.CD009376.pub2 PMid:29291254 PMCid:PMC6491071

4. Lang NP, Tonetti MS. Periodontal risk assessment (PRA) for patients in supportive periodontal therapy (SPT). Oral Health Prev Dent. 2003;1:7-16. PMid:15643744

5. Magnusson I, Lindhe J, Yoneyama T, Liljenberg B. Recolonization of a subgingival microbiota following scaling in deep pockets. J Clin Periodontol. 1984;11:193-207. https://doi.org/10.1111/j.1600-051X.1984.tb01323.x PMid:6368611

6. Mosques T, Listgarten MA, Phillips RW. Effect of scaling and root planing on the composition of the human subgingival microbial flora. J Periodontal Res. 1980;15:137-143. https://doi.org/10.1111/j.1600-0765.1980.tb00267.x PMid:6445975

7. Axelsson P, Lindhe J. The significance of maintenance care in the treatment of periodontal disease. J Clin Periodontol. 1981;8:281-294. https://doi.org/10.1111/j.1600-051X.1981.tb02039.x PMid:6947992

8. Rosling B, Serino G, Hellström MK, Socransky SS, Lindhe J. Longitudinal periodontal tissue alterations during supportive therapy. Findings from subjects with normal and high susceptibility to periodontal disease. J Clin Periodontol. 2001;28:241-249. https://doi.org/10.1034/j.1600-051x.2001.028003241.x PMid:11284537

9. Trombelli L, Simonelli A, Franceschetti G, Maietti E, Farina R. What periodontal recall interval is supported by evidence? Periodontol 2000. 2020;84:124-133. https://doi.org/10.1111/prd.12340 PMid:32844410

10. Farina R, Simonelli A, Baraldi A, et al. Tooth loss in complying and non-complying periodontitis patients with different periodontal risk levels during supportive periodontal care. Clin Oral Investig. 2021;25:5375-5384. https://doi.org/10.1007/s00784-021-03895-8 PMid:33760975 PMCid:PMC8443470

11. Ramseier CA, Nydegger M, Walter C, et al. Time between recall visits and residual probing depths predict long-term stability in patients enrolled in supportive periodontal therapy. J Clin Periodontol. 2019;46:218-230. https://doi.org/10.1111/jcpe.13041 PMid:30499586

12. Costa FO, Lages EJ, Cota LO, et al. Tooth loss in individuals under periodontal maintenance therapy: 5-year prospective study. J Periodontal Res. 2014;49:121-128. https://doi.org/10.1111/jre.12087 PMid:23647520

13. König J, Plagmann HC, Rühling A, Kocher T. Tooth loss and pocket probing depths in compliant and non-compliant patients up to 10 years after supportive periodontal therapy. J Clin Periodontol. 2002;29:1092-1100. https://doi.org/10.1034/j.1600-051X.2002.291208.x PMid:12492910

14. Ravidà A, Galli M, Saleh MHA, et al. Maintenance visit regularity has a different impact on periodontitis-related tooth loss depending on patient staging and grading. J Clin Periodontol. 2021;48:1008-1018. https://doi.org/10.1111/jcpe.13489 PMid:33998024

15. Rosén B, Olavi G, Badersten A, et al. Effect of different frequencies of preventive maintenance treatment on periodontal conditions. 5-Year observations in general dentistry patients. J Clin Periodontol. 1999;26:225-233. https://doi.org/10.1034/j.1600-051X.1999.260405.x PMid:10223393

16. Gaunt F, Devine M, Pennington M, et al. The cost-effectiveness of supportive periodontal care for patients with chronic periodontitis. J Clin Periodontol. 2008;35:67-82. https://doi.org/10.1111/j.1600-051X.2008.01261.x PMid:18724842

17. Sonnenschein SK, Kohnen R, Ruetters M, Krisam J, Kim TS. Adherence to long-term supportive periodontal therapy in groups with different periodontal risk profiles. J Clin Periodontol. 2020;47:351-361. https://doi.org/10.1111/jcpe.13252 PMid:31912538

18. Campos ISO, de Freitas MR, Costa FO, et al. The Effects of Patient Compliance in Supportive Periodontal Therapy on Tooth Loss: A systematic Review and Meta-analysis. J Int Acad Periodontol. 2021;23:17-30. PMid:33512339

19. Matuliene G, Pjetursson BE, Salvi GE, et al. Influence of residual pockets on progression of periodontitis and tooth loss: Results after 11 years of maintenance. J Clin Periodontol. 2008;35:685-695. https://doi.org/10.1111/j.1600-051X.2008.01245.x PMid:18549447

20. Chatzopoulos GS, Wolff LF. The impact of supportive periodontal therapy on the progression of molar furcation involvement: A time-to-event retrospective analysis. Quintessence Int. 2025;56:816-824.

21. Rattu V, Patel T, Loke J, Petsos H, Nibali L. Long-term clinical benefits of periodontal interventions in strict supportive periodontal care: A systematic review. J Periodontol. 2025 [ahead of print] https://doi.org/10.1002/jper.70027 PMid:41251445 PMCid:PMC13111774

22. Graetz C, Sälzer S, Plaumann A, et al. Tooth loss in generalized aggressive periodontitis: Prognostic factors after 17 years of supportive periodontal treatment. J Clin Periodontol. 2017;44:612-619. https://doi.org/10.1111/jcpe.12725 PMid:28346706

23. Austin PC. An introduction to propensity score methods for reducing the effects of confounding in observational studies. Multivariate Behav Res. 2011;46:399-424. https://doi.org/10.1080/00273171.2011.568786 PMid:21818162 PMCid:PMC3144483

24. Chatzopoulos GS, Wolff LF. Prevalence, severity, and distribution of tooth mobility and association with patient-related factors in a large university-based dental cohort: An exploratory study. J Dent. 2025;162:106024. https://doi.org/10.1016/j.jdent.2025.106024 PMid:40783142

25. Chatzopoulos GS, Wolff LF. Progression of Furcation Involvement: A Multi-Center Cohort Study of Incidence, Timing, and Risk Factors. J Periodontal Res. 2025;60:112-122.

26. Socransky SS, Haffajee AD. Periodontal microbial ecology. Periodontol 2000. 2005;38:135-187. https://doi.org/10.1111/j.1600-0757.2005.00107.x PMid:15853940

27. Teles R, Teles F, Frias-Lopez J, Paster B, Haffajee A. Lessons learned and unlearned in periodontal microbiology. Periodontol 2000. 2013;62:95-162. https://doi.org/10.1111/prd.12010 PMid:23574465

28. Webster-Clark M, Stürmer T, Wang T, et al. Using propensity scores to estimate effects of treatment initiation decisions: State of the science. Stat Med. 2021;40:1718-1735. https://doi.org/10.1002/sim.8866 PMid:33377193

29. Agoritsas T, Merglen A, Shah ND, O'Donnell M, Guyatt GH. Adjusted Analyses in Studies Addressing Therapy and Harm: Users' Guides to the Medical Literature. JAMA. 2017;317:748-759. https://doi.org/10.1001/jama.2016.20029 PMid:28241362 PMCid:PMC11856504

30. Benedetto U, Head SJ, Angelini GD, Blackstone EH. Statistical Primer: Propensity Score Matching and Its Alternatives. Eur J Cardiothorac Surg. 2018;53:1112-1117. https://doi.org/10.1093/ejcts/ezy167 PMid:29684154

31. Saleh MHA, Decker A, Ravidà A, Wang HL, Tonetti M. Periodontitis Stage and Grade Modifies the Benefit of Regular Supportive Periodontal Care in Terms of Need for Retreatment and Mean Cumulative Cost. J Clin Periodontol. 2024;51:156-167. https://doi.org/10.1111/jcpe.13909 PMid:38084661