Mandibular molar with furcation involvement exhibit a poorer prognosis. Furcation involvement in periodontal disease has been a challenge for the dentist.
Objective: The aim of this study was to investigate and find out the correlation between different root trunk length and Inter-radicular angle.
Results: In Buccal & lingual Furcation angle signification difference was observed, Mid-root trunk length of Lingual surface was more than Buccal surface in all the samples.
Conclusions: In conclusion, the lingual furcation of mandibular first molars presented narrower entrance and longer root trunk than the buccal furcation, suggesting more limitation for instrumentation and worse prognosis to lingual furcation involvements in comparison to buccal lesions.