title: Mesiobuccal root canal anatomy of Korean maxillary first and second molars by cone-beam computed tomography.
abstract: OBJECTIVE
  The aim of this study was to investigate the types of canal configurations and the incidence of a second mesiobuccal (MB2) canal in Korean maxillary molar mesiobuccal (MB) roots by analyzing cone-beam computed tomographic (CBCT) images.
  
  
  METHODS
  Three-dimensional CBCT images of 458 maxillary first molars and 467 second molars from 276 Korean patients were analyzed to determine the incidence of an MB2 canal, the types of canal configurations, and the correlations between the incidence of an MB2 canal and age, gender, and tooth position.
  
  
  RESULTS
  The incidence of 2-canaled MB roots was 71.8% in first molars and 42.2% in second molars, with the most common configurations being Weine types III and II. The frequency of an MB2 canal decreased with age in both molars (P < .05).
  
  
  CONCLUSIONS
  Types III and II canal configurations were the most prevalent in the 2-canaled MB roots of Korean maxillary molars.
authors: Department of Conservative Dentistry, Dental Research Inst, School of Dentistry, Seoul National University, Seoul, Repubic of Korea.
authors: Jin-Hee
authors: JH
authors: Lee
authors: Kee-Deog
authors: KD
authors: Kim
authors: Jong-Ki
authors: JK
authors: Lee
authors: Wonse
authors: W
authors: Park
authors: Jin Sun
authors: JS
authors: Jeong
authors: Yoon
authors: Y
authors: Lee
authors: Yu
authors: Y
authors: Gu
authors: Seok-Woo
authors: SW
authors: Chang
authors: Won-Jun
authors: WJ
authors: Son
authors: Woo-Cheol
authors: WC
authors: Lee
authors: Seung-Ho
authors: SH
authors: Baek
authors: Kwang-Shik
authors: KS
authors: Bae
authors: Kee-Yeon
authors: KY
authors: Kum
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D054893:Cone-Beam Computed Tomography; D003786:Dental Pulp Cavity / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008334:Mandible; D008437:Maxilla; D008875:Middle Aged; D008963:Molar / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D019252:Radiography, Dental, Digital; D012015:Reference Standards; D056910:Republic of Korea; D014092:Tooth Root / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D055815:Young Adult