Morphometric study of the root anatomy in furcation area of mandibular first molars.

Unlabelled: Furcation involvement in periodontal disease has been a challenge for the dentist.

Objective: The aim of this study was to investigate root dimensions in the furcation area of 233 mandibular first molars.

Material And Methods: Digital photomicrographs were used to obtain the following measurements on the buccal and lingual surfaces of each tooth: root trunk height (RT), horizontal interadicular distance obtained 1 mm (D1) and 2 mm (D2) below the fornix and interadicular angle (IA).