AIM: To identify risk factors for loss of molars during supportive periodontal therapy (SPT). MATERIALS AND METHODS: A total of 136 subjects with 1015 molars at baseline were examined retrospectively. The association of risk factors with loss of molars was assessed using a multilevel Cox regression analysis. Furcation involvement (FI) was assessed clinically at start of periodontal therapy and assigned according to Hamp et  al. (1975). RESULTS: Fifty molars were extracted during active periodontal therapy (APT) and 154 molars over the average SPT period of 13.2      2.8  years. FI degree III (HR 4.68, p  <  0.001), baseline @entity604 ( @entity604 )  >  60% (HR 3.74, p  =  0.009), residual mean probing pocket depth (PPD, HR 1.43, p  =  0.027), and endodontic treatment (HR 2.98, p  <  0.001) were identified as relevant tooth-related factors for loss of molars during SPT. However, mean survival time for molars with FI III or @entity604  >  60% were 11.8 and 14.4  years, respectively. Among the @entity1 data, age (HR 1.57, p  =  0.01), female gender (HR 1.99, p  =  0.035), smoking (HR 1.97, p  =  0.034), and @entity6 (HR 5.25, p  =  0.021) were significant predictors for loss of molars. CONCLUSION: Overall, periodontal therapy results in a good prognosis of molars. Degree III FI, progressive @entity604 , endodontic treatment, residual PPD, age, female gender, smoking, and @entity6 strongly influence the prognosis for molars after APT.

Loss of molars in periodontally treated XXXX : results 10  years and more after active periodontal therapy.

@entity1 :: ('9606', 'Species') :: ['patient'] @entity604 :: ('MESH:D016301', 'Disease') :: ['BL', 'bone loss'] @entity6 :: ('MESH:D003920', 'Disease') :: ['diabetes mellitus']
@entity1 :: (9606,Species) :: ['patients']
