Relationship between condyle movement and disc position in patients with Class Ⅱ division 1 malocclusion
10.3760/cma.j.issn.1002-0098.2010.01.005
- VernacularTitle:安氏Ⅱ类1分类错(牙合)髁突运动轨迹与关节盘位置的相关性研究
- Author:
Xue-Jun ZHANG
1
;
Chuan-Li ZHOU
;
Yu-Xing BAI
;
Xiao-Jiang YANG
;
Bang-Kang WANG
Author Information
1. 首都医科大学口腔医学院
- Keywords:
Malocclusion,Angle Class Ⅱ;
Temporomandibular joint disk;
Condyle movement
- From:
Chinese Journal of Stomatology
2010;45(1):16-19
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between condyle movement and temporomandibular disorders(TMD)in patients with Class Ⅱ division 1 malocclusion.Methods Twenty patients(from 11 to 12 years old)with Class Ⅱ division 1 malocclusion before treatment were collected.Computer aided diagnosis axiograph(CADIAX)and magnetic resonance images(MRI)were used to analyze the condyle movement between disc displacement and normal groups.Results The sensitive values were found in open/close process in patients with disc displacement:Y[Left:(0.32±0.10)mm,Right:(-0.91±0.49)mm],Z[Left:(4.20±0.70)mm,Right:(3.44±0.21)mm],sagittal condylar inclination(SCI)[Left:(32.48±7.70)°,Risht:(33.47±12.60)°]and horizontal condylar inclination (TCI)[Left:(-2.60±2.02)°,R:(-9.23±5.58)°],and those items showed significant difference between two groups.Conclusions The side shift of condyle movement in maximum open/close process might be the inducement of disc displacement.It was revealed that the changes in condyle movement could give useful information in early stage of functional treatment.
