title: [Measurement on bone density of children's mandible by quantitative computed tomography].
abstract: OBJECTIVE
  To explore the change of bone density of children's mandible measured by quantitative computed tomography (QCT).
  
  
  METHODS
  71 children aged between 10-16 years were measured by QCT in left mandible angle, middle of mandible and right mandible angle. The differences were analyzed according to the age and sex respectively.
  
  
  RESULTS
  The density of mandible of left mandible angle, middle of mandible, right mandible angle were 44.29, 89.70, 54.31 mg/dL in the 10-12 ages group, and 63.85, 122.47, 70.23 mg/dL in the 13-16 ages group.
  
  
  CONCLUSIONS
  Male youngster's mandible density was increased with the age between 10-12 and 13-16 ages. There were significant differences between left mandible angle, middle of mandible and right mandible angle. There were significant differences of mandible density between male and female.
authors.affiliation: Dept. of Stomatology, The People's Hospital of Gansu Province, Lanzhou 730000, China.
authors.forename: Zhen-ya
authors.initials: ZY
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Huang
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Wei-ping
authors.initials: WP
authors.lastname: Ren
mesh_terms: D015519:Bone Density; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D014057:Tomography, X-Ray Computed