Journal
INTERNATIONAL ENDODONTIC JOURNAL
Volume 46, Issue 11, Pages 1032-1038Publisher
WILEY
DOI: 10.1111/iej.12094
Keywords
canal configuration; cone-beam computed tomography; C-shaped canal; mandibular second molars
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AimTo use cone-beam computed tomography (CBCT) to evaluate the prevalence and anatomical features of C-shaped canals in permanent mandibular second molars amongst members of a Turkish population. MethodologyAn endodontist and oral radiologist examined CBCT images of 271 Turkish mandibular second molars to determine the presence of C-shaped canals and their anatomical features. Root canal configurations at five different levels were categorized using the classification of Fan etal. (Journal of Endodontics, 30, 2004a,b, 899-903; 904-8). Bilateral or unilateral occurrence of C-shaped canals and their relationships with gender, age and tooth position were examined and statistically analysed using the chi-squared test. ResultsOf the 271 mandibular second molars examined, 24 (8.9%) molars from 17 patients had a C-shaped root canal system. The prevalence of bilateral C-shaped canals was 6.3% amongst 111 patients with bilateral mandibular second molars. There were no significant differences in the distribution of C-shaped canals with respect to gender or age. Only one tooth had the same canal configuration from the orifice to the apex. In the remainder of the teeth, the cross-sectional canal configuration changed at different levels of the root. ConclusionsThe configuration of C-shaped canals varied along the length of the root. The prevalence of C-shaped canals in mandibular second molars in this Turkish population was lower than in other Asian populations.
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