title: [Evaluation of cone-beam CT in diagnosis of supernumerary teeth in the anterior maxilla].
abstract: OBJECTIVE
  To evaluate the value of cone-beam CT (CBCT) in the diagnosis and orientation of supernumerary teeth in the anterior maxilla.
  
  
  METHODS
  195 supernumerary teeth in the anterior maxilla of 146 patients were included, which were examined by CBCT. The number, shape, size, 3-dimensional position, growth direction of the supernumeraries and their relationship with the neighboring teeth were analyzed.
  
  
  RESULTS
  The 146 patients aged from 5 to 39, and males were affected more than females in a ratio of 2.95:1. 102 (69.9%) patients had single supernumerary teeth. Of the 195 supernumerary teeth, 126 (64.6%) were near the middle line, 131 (67.2%) were conical, 51 (26.2%) were curved root, 98 (50.3%) were inverted and had a length of (11.97 +/- 2.40) mm. The supernumerary teeth often caused complications.
  
  
  CONCLUSIONS
  The position of the supernumerary teeth is varied in the maxilla, and often causes permanent dentition complications. CBCT imaging yields accurate 3-dimensional pictures of supernumerary teeth, local dental and bony structures, which is helpful for diagnosis and orientation of supernumerary teeth.
authors.affiliation: Dept. of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu 610041, China.
authors.forename: Chenni
authors.initials: C
authors.lastname: Wen
authors.forename: Guo
authors.initials: G
authors.lastname: Li
authors.forename: Jiayin
authors.initials: J
authors.lastname: Ren
authors.forename: Guangning
authors.initials: G
authors.lastname: Zheng
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla; D014092:Tooth Root; D014096:Tooth, Supernumerary; D055815:Young Adult