Relationship between condyle movement and disc position in patients with Class II division 1 malocclusion.
- Author:
Xue-jun ZHANG
1
;
Chuan-li ZHOU
;
Yu-xing BAI
;
Xiao-jiang YANG
;
Bang-kang WANG
Author Information
- Publication Type:Journal Article
- MeSH: Child; Diagnosis, Computer-Assisted; instrumentation; Female; Humans; Jaw Relation Record; Male; Malocclusion, Angle Class II; complications; physiopathology; Mandibular Condyle; pathology; physiopathology; Movement; Temporomandibular Joint Disc; pathology; Temporomandibular Joint Disorders; etiology; pathology
- From: Chinese Journal of Stomatology 2010;45(1):16-19
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the relationship between condyle movement and temporomandibular disorders (TMD) in patients with Class II division 1 malocclusion.
METHODSTwenty 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.
RESULTSThe 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) degrees , Right: (33.47 +/- 12.60) degrees ] and horizontal condylar inclination (TCI) [Left: (-2.60 +/- 2.02) degrees , R: (-9.23 +/- 5.58) degrees ], and those items showed significant difference between two groups.
CONCLUSIONSThe 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.
