[Condyle movement in class II division 1 malocclusion patients after functional appliance treatment].
OBJECTIVE
To record and analyze the characteristics of condyle movement before and after functional treatment in Angle class II division 1 malocclusion (II(1)) patients.


METHODS
Twenty Angle II(1) patients were included in the study and 20 Angle I patients without temporomandibular disorders symptoms served as controls. Computer aided diagnosis axiograph (CADIAX) was used to record the condyle movement in Angle II(1) patients and that caused by functional appliance treatment during mouth opening and closing.


RESULTS
The tracing were vertically displayed. Value Z [L: 2.21 (1.01) mm, R: 1.12 (1.02) mm] and sagittal condylar inclination [L: 12.89 (9.12) degrees, R: 12.12 (8.89) degrees] were increased significantly in Angle II(1) patients compared with those in control group (P < 0.05). After functional treatment, the condyle movement in Angle II(1) patients was close to normal (P > 0.05).


CONCLUSIONS
Typical characteristics of condyle movement were found in Angle II(1) patients and it was stable and repeatable. Functional therapy had a positive effect on temporomandibular joint function in Angle II(1) patients.
Zhang
Xue-jun
XJ
Department of Orthodontics, Faculty of Stomatology, Capital University of Medical Sciences, Beijing 100050, China. zxj666@yahoo.com
Bai
Yu-xing
YX
Yang
Xiao-jiang
XJ
Wang
Bang-kang
BK
D005260:Female; D006801:Humans; D008297:Male; D008312:Malocclusion, Angle Class II / Q000503:physiopathology* / Q000628:therapy; D008335:Mandibular Condyle / Q000503:physiopathology; D013704:Temporomandibular Joint / Q000503:physiopathology*