Maksiller birinci molar dişlerde fenestrasyon ve dehisensin değerlendirilmesi

Abstract

Understanding the canal anatomy of mandibular premolars has clinical importance to manage successful endodontic treatment. The aim of the study was to investigate the canal configuration of mandibular premolars in the Turkish subpopulation using cone-beam computed tomography (CBCT). For the study, CBCT images of 55 patients who referred to the university clinic were retrospectively scanned and 186 mandibular premolars (86 first and 100 second premolars) were selected. CBCT images were taken from Orthophos (Sirona Dental Systems, Bensheim, Germany). Endodontically treated teeth, post-core restoration, carious lesion, vertical root fracture, external or internal resorption were excluded. CBCT images were analyzed on the coronal, axial, and sagittal plane in CBCT at x5 magnification. According to Vertucci classification, canal configurations of mandibular premolars were recorded. Statistical analysis was performed. All of the mandibular premolars (100%) examined in this study were single-rooted. Type I canal configuration in mandibular first and second premolars was detected as 89 % and 94 %, respectively. In mandibular first premolars, type II and type IV canal configurations were 4.8 % and 6.2 %, respectively. In mandibular second premolars, all samples except the single canal configuration were identified as type II (6 %). There is no statistical difference between males and females in the canal configuration of mandibular premolars (p>.05). The complex canal anatomy of mandibular premolars is needed careful and detailed investigation. CBCT imaging technique was considered suitable for the investigation of canal configuration of mandibular premolars. The results of the study may guide clinicians for endodontic therapy of these teeth. Ethnic and racial factors may variate the canal configurations of mandibular premolars.