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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
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ISSN : 0376-4672

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50권 4호

한국인의 영구 하악 제2대구치의 C형 근관 빈도와 형태 : Cone-Beam CT 자료 분석

The incidence and types of C-shaped canal of permanent mandibular second molar in Korean sub-population: Cone-Beam CT data analysis

문정본 (부산대학교)
김현철 (부산대학교)
손성애 (부산대학교)
박봉수 (부산대학교)
이효진 (부산대학교)
장주경 (치과보존학교실)
대한치과의사협회지 / The Journal of the Korean Dental Association, (P)0376-4672; (E)2713-7961
2012, v.50 no.4, pp.203-210
https://doi.org/10.22974/jkda.2012.50.4.004
문정본, 김현철, 손성애, 박봉수, 이효진, & 장주경. (2012). 한국인의 영구 하악 제2대구치의 C형 근관 빈도와 형태 : Cone-Beam CT 자료 분석. 대한치과의사협회지, 50(4), 203-210, https://doi.org/10.22974/jkda.2012.50.4.004

Abstract

The aim of this study was to investigate the incidence of the C-shaped canal of permanent mandibular second molar (PMSM) in Korean sub-population using Cone-Beam CT (CBCT) data and analyze the types of C-shaped canal. Materials & Methods : The protocol for this study was approved by the Institutional Review Board at the Pusan National University Hospital (E-2011039). Among the CBCT images taken of patients who visited the St. Bennedict Dental Hospital (Busan, Korea) from May 2008 to April 2011 for implant surgery and surgical removal of impacted teeth, high-quality CBCTs from 705 patients (361 male and 342 female) were screened and 607 PMSMs of 383 patients were evaluated retrospectively. All PMSMs were anatomically analyzed in detail by using image viewer software (EasyDent; Vatech). PMSMs were evaluated in the axial plane to investigate the shape of root and canals. The C-shaped canals were classified into five types. The total incidence,gender ratio, bilateral and unilateral appearance, and the correlation between right-side and left-side occurrences of C-shaped PMSMs were computed and compared statistically using the chi-square test. Results : Among the 607 PMSMs of 383 CBCTs of 187 females and 196 males, 198 PMSMs (32.6%) had C-shaped root and 158 PMSMs (26.0%) had C-shaped canals. The shape of C-shaped root canals at the furcation level did not have significant change at the level of mid root (P<0.0001). Female had more prevalence of C-shaped root canals than male (P<0.0001). The prevalence of bilateral occurrence of C-shaped root canals was higher than unilateral occurrence. Conclusions : The occurrence of C-shaped PMSMs among a Korean population was 32.6% and was higher than other countries and ethnicities. Understanding the prevalence of PMSMs with a C-shaped root and/or canal in a Korean population may be useful for successful endodontic treatments.

keywords
C-shaped canal, C-shaped root, mandibular second molar, Cone-Beam CT, Korean

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