A retrospective study on incidence of C-shaped canals in mandibular second molars

Hee-Sun Kim

doi:10.5395/JKACD.2009.34.4.346

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Kim: A retrospective study on incidence of C-shaped canals in mandibular second molars

Original Article

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2009; 34(4): 346-349.

Published online: 31 July 2009

DOI: https://doi.org/10.5395/JKACD.2009.34.4.346

A retrospective study on incidence of C-shaped canals in mandibular second molars

Hee-Sun Kim

SMG-SNU Boramae Hospital, Korea.

Corresponding author: Hee-Sun Kim. SMG-SNU Boramae Hospital, 425 Shindaebang-dong, Dongjak-Gu, Seoul 156-707, Korea. Tel: 82-2-870-2502, Fax: 82-2-831-0714, hskim905@freechal.com

Received 1 June 2009 Revised 5 June 2009 Accepted 6 June 2009

Abstract

Mandibular second molars have many variations in canal configuration. Technical modifications in cleaning, shaping and obturation are required. The purpose of this study was to investigate the root canal anatomy of mandibular second molars. 86 teeth of 85 patients were accessed and evaluated with taking radiographs for working length determination. 27 teeth(31.4%) had C-shaped canals, 43 teeth(50%) had 3 canals, 11 teeth(12.7%) had 4 canals, 5 teeth(5.8%) had 2 canals. Incidence of C-shaped canal was 31.7% in male and 31.1% in female. 30.9% of left mandibular second molar and 31.8% of right mandibular second molar showed C-shaped canals.

Keywords: mandibular second molar, canal shape, C-shaped canal, radiograph

Figures and Tables

Table 1

Incidence of root canal types

Table 2

Incidence of C-shaped canal

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