MR imaging of the chronic clicking temporomandibular joints

VernacularTitle:慢性张口弹响青年人颞下颌关节MRI研究
Author: Xiang FAN ; Ping WANG
Publication Type:Journal Article
Keywords: temporomandibular joint; articular disc; clicking; magnetic resonance imaging
From: Journal of Practical Radiology 2015;(3):368-371
CountryChina
Language:Chinese
Abstract: Objective To analyse the MRI characteristics of the chronic clicking temporomandibular joints(TMJs).Methods 20 TMJs in 10 young chronic clicking individuals (12 clicking TMJs)and 60 TMJs in 30 young healthy volunteers were examined by MRI scanner, and sagittal oblique opened-mouth and closed-mouth position images were observed.Then comparing the MRI findings of the acquired j oints between two groups.Results The ratio of the non-double concave articular disc,slightly high signal intensity in the articular disc, abnormal changes of the condyle,articular fluid,anterior displacement of the articular disc,and increasedDraceangles in the clicking group were significantly higher than those in the control group(P<0.05).The result revealed statistically significant differences.Conclusion The MRI anatomical characteristics can be an indicator for the TMJ anomalys,and provide an obj ective radiological basis for clinical diagnosis and treatment to some extent.