Evaluation of Distolingual Canal/Roots in Mandibular Molars and Mesiobuccal Canals in Maxillary Molars by CBCT.

Filiz Namdar Pekiner,M Oğuz Borahan,Asım Dumlu

doi:10.2174/1874210601711010360

Abstract

Background/Purpose:The objectives of this study were to identify the bilateral distolingual (DL) canals / roots of the mandibular first molars and second mesiobuccal (MB2) canals of the maxillary first molars in the same Turkish individuals using cone-beam computed tomography (CBCT).Materials and Methods:A total of 150 CBCT images including all mandibular and maxillary first molars were retrospectively investigated in a Turkish subpopulation. The patient age, sex and presence of roots and root canals were assessed. The frequency, of bilateral DL canals, DL roots, and MB2 canals were reviewed. Data were analyzed using Fisher’sexact test and Chi-square test.Results:The prevalences of right DL canals, DL roots and MB2 canals were 31.3, 14.0 and 34.7%, respectively. The prevalences of left DL canals, DL roots and MB2 canals were 31.3, 4 and 27.3%, respectively. There was no statistically difference in the frequency of right and left DL canals, DL roots of mandibular first molars and MB2 canals of maxillary first molars according to gender.Conclusion:CBCT is a competent tool for the detection of additional distolingual canals/roots and second mesio buccal canals, and it is a valuable aid for dentists providing root canal treatment.

Highlights

Success of endodontic management depends on the accurate debridement of the root canal space followed by complete obturation for obtaining the three-dimensional seal [1, 2]
This retrospective study sample is consisted of 150 patients (77 female, 73 male; 21-55 years old, mean 27.66 ± 6.08 years) who visited the department of Oral Diagnosis and Radiology at Dentistry Faculty and had cone-beam computed tomography (CBCT) scans for different purposes. 150 cone beam computed tomography (CT) examinations of these patients with large FOVs showing all the mandibular and maxillary first molars fully erupted, formed apices and lacked root canal fillings, posts, and crown restorations, were picked up from the PACS (Picture Archiving Communication Systems) between 2012-2013 and were included in this study
A total 300 mandibular first molars and 300 maxillary first molars were included in the study sample since every subject had mandibular and maxillary first molars on both sides

Summary

Introduction

Success of endodontic management depends on the accurate debridement of the root canal space followed by complete obturation for obtaining the three-dimensional seal [1, 2]. In multirooted teeth, root and root canal morphology variations are a constant challenge for management [3]. A comprehensive knowledge of the root canal anatomy and its morphological variations is essential for successful treatment [2]. Many studies have reviewed the anatomy of the root canals of the mandibular first molars, and noted both complex anatomic variations and abnormalities [5, 6]. In these studies, the presence of a distolingual (DL) root of the mandibular first molars was reported to be 21.09-33.33% in various populations [7, 8]

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Conclusion