[Relationships between MRI image changes of lateral pterygoid muscle, disc position and condylar mobility in Class II patients].
OBJECTIVE
To analyze the relationships between MRI image changes of lateral pterygoid muscle (LPM), disc position and condylar mobility.


METHODS
Twenty Class II patients were chosen and MRI images of LPM were taken. The relationships between MRI image changes of LPM, disc position and condylar mobility were analyzed.


RESULTS
The rate of MRI image changes of LPM in Class II patients was about 45%. No significant correlations were found between MRI image changes of LPM, condylar mobility and disc position.


CONCLUSIONS
MRI image changes of LPM in Class II patients was common but no significant correlations were found between MRI image changes of LPM, condylar mobility and disc position.
Zhou
Chuan-li
CL
Department of Orthodontics, Faculty of Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
Yang
Xiao-jiang
XJ
Wang
Bang-kang
BK
Bai
Yu-xing
YX
D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008312:Malocclusion, Angle Class II / Q000473:pathology* / Q000503:physiopathology*; D011626:Pterygoid Muscles / Q000473:pathology*; D016059:Range of Motion, Articular; D013704:Temporomandibular Joint / Q000503:physiopathology*