DETERMİNİNG THE RELATİONSHİP BETWEEN ANGLE OF ROOTS, CROWN FURCATİON ROOF ANGLE, AND FURCATİON DEFECTS USİNG CONE BEAM COMPUTERİZED TOMOGRAPHY

Objective: furcation defects are complex and difficult periodontal problems to treat. this study analyzes the relationship between the angle of roots and crown furcation roof angle with different furcation defects at mandibular first molars using cone beam computerized tomography. material and methods: cone beam computerized tomography was taken from a total of 1042 patients. the measurements taken from all patients were divided into 3 groups according to their furcation defects. in the first group (g-1), horizontal defect depth was ≤3 mm; in the second group (g-2), horizontal defect depth was >3 mm, and in the third group (g-3), horizontal defect depth was greater than the tooth’s width. results: a total of 1042 patients (530 women and 512 men) were included in the study. the average patient age was 37.2. g-1 has 539 patients, g-2 has 301 patients, and g-3 has 202 patients. the angle of roots was measured for each of the three groups at 16.2o, 15.4o, and 12.9o, respectively. the crown furcation roof angle was measured for the three groups at 105.1o, 110.3o, and 121.9o, respectively. conclusion: furcation defects can be more destructive as the angle of roots decreases and the crown furcation roof angle increases. therefore, when the angle of root is less than 16.2o and crown furcation roof angle is higher than 105.1o, it is thought that mandibular molar teeth are susceptible to furcation defects, and that the furcation defects can be prevented by reducing the time between maintenance periods.