Relationship between Molar Root Trunk Type and Molar Loss in Individuals with Class III Furcation Involvements: A Retrospective Study

Purpose: The purpose of the present study was retrospectively to investigate the association between the types of molar root trunk and molar loss with Class III furcation involvement (FI). A total of 169 extracted teeth from 164 patients, which consisted of 103 maxillary, 66 mandibular first and seconds, diagnosed of severely advanced periodontitis with Class III FI. Materials and Methods: These molars were found affected alveolar bone loss more than 70% using an ECM. The vertical dimension of root trunk was automatically categorized as A, B, and C root trunk type, where the assessment of CAL of extracted molars was calculated PRIA. Result: The results demonstrated that a significant relationship existed; 1) between molar location, prevalence and distribution of extracted molars (p<0.001); 2) between RTT and molar location (p<0.001), furcation sites (p<0.05), as well as 3) between RTT and PAL (p<0.05). Conclusions: It was concluded that a close relationship does exist among molar teeth with long root trunk and loss of molars affected with class III FIs.