Cone-beam computed tomography study of incidence of distolingual root and distance from distolingual canal to buccal cortical bone of mandibular first molars in a Korean population

Journal of Endodontics
Sin-Young Kim, Sung-Eun Yang

Abstract

The purpose of this study was to investigate the incidence of separate distolingual (DL) root and separate DL canal in 1 distal root and to measure the distance from distobuccal (DB) and DL canal to buccal cortical bone of mandibular first molars in a Korean population by using cone-beam computed tomography images. Screening identified 1400 subjects with bilateral permanent mandibular first molars for inclusion in this investigation. The incidences of separate DL root (distal 2 roots with 1 canal for each root, 2 roots 2 canals [2R2C]) and separate DL canal in 1 distal root (distal 1 root with 2 separate canals, 1 root 2 canals [1R2C]) were investigated. The distances from DL canal to buccal cortical bone and from DB canal to buccal cortical bone were measured. The incidence of 2R2C was 26.6% (373 of 1400) on the right side and 19.0% (266 of 1400) on the left side, with a statistically significant difference (P < .001). The incidence of 1R2C was 3.5% (49 of 1400) on the right side and 4.5% (63 of 1400) on the left side. Mean distance from DB canal to buccal cortical bone was 3.37 mm in 2R2C (n = 639) and 4.17 mm in 1R2C (n = 112). Mean distance from DL canal to buccal cortical bone was 8.63 mm in 2R2C and 7.19 mm in 1R2C. Stati...Continue Reading

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Dec 23, 2008·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Je Seon SongJae-Ho Lee

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Citations

Aug 24, 2018·Restorative Dentistry & Endodontics·Hee-Ho KimHo-Keel Hwang
Jul 24, 2021·Journal of the Formosan Medical Association = Taiwan Yi Zhi·Jung-Tsu ChenPo-Chun Chang
Sep 2, 2021·Anatomy & Cell Biology·Takafumi YozaAkinobu Usami

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