Effect of different Access cavity designs on the root canal preparation efficacy of molar teeth.

Thesis Type: Dental Specialty

Institution Of The Thesis: Marmara University, Faculty of Dentistry, Clinical Sciences (Faculty of Dentistry), Turkey

Thesis Language: Turkish

Student: Onur Özle

Consultant: Emre İriboz


The aim of this study was to assess the influence of contracted endodontic cavities (CECs) on root canal detection, instrumentation efficacy, and fracture resistance assessed in maxillary molars. Traditional endodontic cavities (TECs) were used as a reference for comparison. 64 extracted intact maxillary and mandibular molars were scanned with micro–computed tomographic imaging at a resolution of 21 mm, assigned to the CEC or TEC group, and accessed accordingly. Root canal detection was performed in 3 stages: (1) no magnification, (2) under an operating microscope (OM), and (3) under an OM and ultrasonic troughing. After root canal preparation with Reciproc instruments, the specimens were scanned again. The noninstrumented canal area, hard tissue debris accumulation, canal transportation, and centering ratio were analyzed.