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AN IN VITRO COMPARATIVE STUDY FOR PREVALENCE OF SECOND MESIOBUCCAL CANAL IN MAXILLARY FIRST MOLAR

Introduction: The root canal structure must be properly cleaned, shaped, and obturated for endodontic therapy to be successful. Clinicians need to be well-versed on root canal morphology to do this. The advent of visual enhancement in endodontics, along with the use of operating microscope has enhanced clinician’s ability to locate all the canals. 
Objective: The present research aims to evaluate the best method of detection of MB2 canals amongst direct vision (DV), Dental Operating Microscope (DOM) and Cone Beam Computed Tomography (CBCT). 
Methods: Around 90 human maxillary first molar were used in this study, which were extracted due to caries or had to be extracted due to periodontally weakened condition, were collected from the department of Oral and Maxillofacial surgery, School of dental science, KIMSDU, Karad. Samples were made free of debris and calculus by scaling. All the samples were stored in 0.9% saline before use. 
Results: In the present study, the detection of second mesiobuccal (MB2) canal was done using three different methods. The prevalence of MB2 by directed vision showed 33.33% cases. The use of operating microscope showed 56.67% presence of MB2 canals in maxillary first molar and use of Cone Beam Computed Tomography (CBCT) showed 86.67% MB2 canals. The prevalence of MB2 by directed vision showed 33.33% cases. Use of operating microscope showed 56.67% presence of MB2 canals in maxillary first molar and use of CBCT showed 86.67% MB2 canals. The present study showed the presence of MB2 was 56.67%. 
Conclusion: On the bases of the present study one can conclude that CBCT is a promising modality to detect MB2 canals.