Bir Grup Türk Popülasyonunda Alt Çene Azı Dişlerinin Anatomisinin Konik Işınlı Bilgisayarlı Tomografi Çalışması

Abstract

Objective: The mandibular molars represent one of the most common dental groups in which root canal treatments fail due to their complex anatomical structure and presence of the radix entomolaris or c-shaped root canals. For the long-term successful treatment of these teeth, all anatomical variations should be well known. The aim of this study was to evaluate the number of roots and root canal anatomy of mandibular molars in a group of Turkish patients by examining cone-beam computed tomography (CBCT) images.
 Material and Method: The CBCT images of 936 mandibular first and second molars of a total of 280 patients were evaluated, and the number of roots, root canal anatomy, and incidence of the radix entomolaris and c-shaped root canals in these teeth. The patients’ gender and age were also recorded, and their possible correlation with the dental data was investigated.
 Results: Among the total 936 mandibular molars, 98.8% had two roots, and the radix entomolaris was present in 1%. The number of root canals was 3 in 79.7% of the teeth, 4 in 17.7%, and 2 in 2.7%. Of the mandibular second molars, 6.6% showed C-shaped root canal formation. The rate of a single canal (Vertucci type I) was 4.7% for the mesial roots of the second molars, while the distal roots of the mandibular first molars showed type IV formation at a rate of 30.3%.
 Conclusion: Considering the contribution of our findings to clinical practice, the incidence of C-shaped canals in the mandibular second molars was 6.6%. Radix entomolaris was present in 1% of all the teeth. Four root canals were detected in 17.7% of the mandibular molars.