Study on the correlation between the structure of TMJ and vertical craniofacial pattern,occlusion in ClassⅡ~1 Children
- VernacularTitle:安氏Ⅱ~1类下颌后缩颞下颌关节结构与垂直骨面型、覆覆盖的相关性研究
- Author:
Ying FANG
;
Wen SUN
;
Jiejun SHI
;
Shifang ZHAO
- Publication Type:Journal Article
- Keywords:
Temporomandibular joint;
Craniofacial pattern;
Occlusion;
Magnetic resonance imaging;
Cephalometry;
Class Ⅱ division 1 malocclusion
- From:
Journal of Practical Stomatology
2000;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the relationship between the structure of TMJ and the craniofacial pattern,occlusion in ClassⅡ1mandibular retrusion children. Methods:TMJ MRI,lateral cephalometric were taken respectively from 30 ClassⅡ1 patients (14 boys and 16 girls,the average age was 10.8?1.1 years). The condyle position and disc position were measured. The correlation of condyle and disc position with craniofacial pattern and occlusion were analyzed metrically and compared with pearson test.Results:There were low positive correlation between MP-SN angle and anterial space. No correlation between posterior-anterior ratio and other data were found. The posterior facial height and Dp-Cc/Cs-Cc angle had low positive correlation. The anterior facial height and Dp-Cc/Cs-Cc、Ca-Ca'、Ca-Cp showed low negative correlation,and little correlation was found between condyle position and overbite and overjet. Overbite had no correlation with disc-condyle-fossa relationship. However,The positive correlation was found between the overjet. and Ca-Dm and Dp-Cc/Cs-Cc,and Pearson coefficient is 0.420 and 0.460.Conclusion:Vertical craniofacial patter has relation to forward displacement of condyle and backward displacement of disc. A deeper overjet is related with a higher risk of abnormal disc-condyle-fossa relationship.
