Article Title and Bibliographic Information: Miyamoto T, Kumagai T, Jones JA, Van Dyke TE, Nunn ME. Compliance as a prognostic indicator: retrospective study of 505 patients treated and maintained for 15 years. J Periodontol 2006;77(2):223-32. Level of Evidence: 3a. Purpose/Question: To evaluate the impact of compliance with maintenance on tooth loss. Source of Funding: Not reported. Type of Study/Design: Cohort study. © 2006 Elsevier Inc. All rights reserved.