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논문 기본 정보

자료유형
학술저널
저자정보
Choi, Mi-Ree (Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital) Moon, Young-Mi (Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital) Seo, Min-Seock (Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital)
저널정보
대한영상치의학회 Imaging science in dentistry Imaging science in dentistry 제45권 제4호
발행연도
2015.1
수록면
221 - 226 (6page)

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Purpose: This study evaluated the prevalence of distolingual roots in mandibular molars among Koreans, the root canal system associated with distolingual roots, and the concurrent appearance of a distolingual root in the mandibular first molar and a C-shaped canal in the mandibular second molar. Materials and Methods: Cone-beam computed tomographic images of 264 patients were screened and examined. Axial sections of 1056 mandibular molars were evaluated to determine the number of roots. The interorifice distances from the distolingual canal to the distobuccal canal were also estimated. Using an image analysis program, the root canal curvature was calculated. Pearson's chi-square test, the paired t-test, one-way analysis of variance, and post-hoc analysis were performed. Results: Distolingual roots were observed in 26.1% of the subjects. In cases where a distolingual root was observed in the mandibular molar, a significant difference was observed in the root canal curvature between the buccolingual and mesiodistal orientations. The maximum root canal curvature was most commonly observed in the mesiodistal orientation in the coronal portion, but in the apical portion, maximum root canal curvature was most often observed in the buccolingual orientation. Conclusion: The canal curvature of distolingual roots was found to be very complex, with a different direction in each portion. No correlation was found between the presence of a distolingual root in the mandibular first molar and the presence of a C-shaped canal in the mandibular second molar.

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