title: Accessory mental foramen assessment using cone-beam computed tomography.
abstract: OBJECTIVE
  The purpose of the present study was to assess the accessory mental foramen using cone-beam computed tomography (CBCT) images.
  
  
  METHODS
  A total of 157 patients were enrolled in this investigation. The mental and accessory mental foramina, which show continuity with the mandibular canal, were assessed using axial and cross-sectional, 2-dimensional CBCT images. The sizes of the mental and accessory mental foramina were measured and statistically analyzed. Also, the distance between the mental and accessory mental foramina was measured.
  
  
  RESULTS
  The accessory mental foramen was observed in 7% of patients. There was no significant difference regarding the sizes of the mental foramen between accessory mental foramen presence and absence. Also, the mean distance between the mental and accessory mental foramina was 6.3 mm (SD: 1.5 mm).
  
  
  CONCLUSIONS
  The accessory mental foramen, which shows continuity with the mandibular canal, could be observed in 7% of the subjects using CBCT.
authors.affiliation: Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Japan. mune@dpc.aichi-gakuin.ac.jp
authors.forename: Munetaka
authors.initials: M
authors.lastname: Naitoh
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Hiraiwa
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Aimiya
authors.forename: Kenichi
authors.initials: K
authors.lastname: Gotoh
authors.forename: Eiichiro
authors.initials: E
authors.lastname: Ariji
mesh_terms: D002680:Chin / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D054893:Cone-Beam Computed Tomography / Q000295:instrumentation; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008340:Mandibular Nerve / Q000000981:diagnostic imaging*; D019252:Radiography, Dental, Digital / Q000379:methods*; D011873:Radiology Information Systems