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The present study was to investigate the Topography of Root Trunk type (RTT) and Furcation Entrance Dimension (FED) on extracted molars affected with advanced periodontitis and furcation involvement (FI). A total 169 extracted maxillary and mandibular molars (165 patients) affected with severely advanced periodontal destruction. The RTT was categorized as A, B, C, and the FED was clarified into subclass -1, -2, and -3, respectively. Results showed that the prevalence of mandibular second molars with RTT-C and FED-1 occurs higher; (33.0%), and the relationship between RTT and FED is significance (p&lt;0.005). In addition, the relationship between RTT-C and FED-1 also shows a statistical significance (p&lt;0.01) on the buccal surface (41.5%) of the mandibular second molar.

international journal of dentistry and oral health

Root Topographic Study on Molars with Furcation Involvements in Taiwanese Adults: A Risk Analysis of Furcation Entrance Dimension and Root Trunk Length