Int J Stomatol

Inter J Stomatol ›› 2015, Vol. 42 ›› Issue (5): 538-541.doi: 10.7518/gjkq.2015.05.012

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Cone beam computed tomography analysis of temporomandibular joint morphology in adult Angle’s Class Ⅰ malocclusions with different vertical skeletal features

Li Fang1, Wang Jianguo2.   

  1. 1. Dept. of Orthodontics, Hefei Stomatological Hospital, Hefei 230001, China; 2. Dept. of Orthodontics, Tianjin Stomatological Hospital, Tianjin 300041, China
  • Received:2015-02-11 Revised:2015-04-29 Online:2015-09-01 Published:2015-09-01

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Abstract:

Objective This study used cone beam computed tomography(CBCT) to investigate the morphology of temporomandibular joint(TMJ) in adult Angle’s Class Ⅰ malocclusion with different vertical skeletal features. Methods Adult patients with Angle’s Class Ⅰ malocclusions were divided into three groups: high angle, normal angle, and low angle. The patients underwent CBCT separately. The reconstructed images of TMJ were analyzed statistically by NNT software. Results Statistically significant differences were not observed between two sides of the TMJ in adult Angle’s Class Ⅰ malocclusion with different vertical skeletal features(P>0.05). No definite position of the condylar processes was observed in the three groups. Statistically significant differences in the height of condylar process and the angle of condylar process were observed between the high angle group and the other groups(P<0.05). Conclusion The two sides of TMJ in adult Angle’s Class Ⅰ malocclusion with different vertical skeletal features were mainly symmetrical. The condylar processes had no definite position in the three groups. Compared with the other groups, the height of the condylar processes was lower and the angle of the condylar processes was larger in the high angle group.

Key words: vertical skeletal features, temporomandibular joint, cone beam computed tomography


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