Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (13): 2358-2361.doi: 10.3969/j.issn.1673-8225.2012.13.018

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Condylar volume and surface area in adults with unilateral scissors-bite assessed by cone-beam computed tomography

Wang Mou, Zhang Ding-ming, Feng Gang, Zhou Xiao-feng, Dai Hong-wei   

  1. Department of Orthodontics, Stomatology Hospital of Chongqing Medical University, Chongqing  400015, China
  • Received:2012-01-04 Revised:2012-02-06 Online:2012-03-25 Published:2012-03-25
  • Contact: author: Dai Hong-wei, Chief physician, Professor, Department of Orthodontics, Stomatology Hospital of Chongqing Medical University, Chongqing 400015, China dai_tg@yahoo.cn
  • About author:Wang Mou★, Studying for master’s degree, Department of Orthodontics, Stomatology Hospital of Chongqing Medical University, Chongqing 400015, China wangmou1986@qq.com

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Abstract:

BACKGROUND: Condyle is the growth center of the mandibular, occlusal asymmetry can cause morphologic alterations in condylar.
OBJECTIVE: To investigate condylar volume and surface area of patients with unilateral scissors-bite assessed by cone-beam computed tomography and to observe the effect of unilateral scissors-bite on the morphology of condylar.
METHODS: Twenty-nine adults with unilateral scissors-bite were selected as experimental group from the Department of Orthodontics, Stomatology Hospital of Chongqing Medical University. Thirty-two adults with normal occlusion were selected as control group at the same time. All the objects had no orthodontic treatment history. The cone-beam computed tomography was taken before orthodontic treatment and the measurement of volume and surface area was taken by Mimics 10.0 software.
RESULTS AND CONCLUSION: In the experimental group, the condylar volume and surface area on the noscissors-bite side were smaller than those on the scissors-bite side (P < 0.05). The condylar volume and surface asymmetry index of the experimental group were significantly bigger than those of the control group (P < 0.05). Subjects with unilateral scissors-bite have asymmetrical condyles.

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