|
KMID : 0355220110360030177
|
|
Journal of Korean Academy Oral Medicine
2011 Volume.36 No. 3 p.177 ~ p.185
|
|
|
The Relationship between Temporomandibular joint Pain and the Relative Signal Intensity of Retrodiscal Tissue on T1-, and T2-Weighted MRI Images
|
|
Jung Jae-Kwang
Hur Yun-Kyung
Choi Jae-Kap
|
|
|
Abstract
|
|
|
Aims: The purpose of this study was to evaluate the relationship between temporomandibular joint pain and the relative signal intensity (RSI) of retrodiscal tissue on T1-, and T2-weighted MRI images.
Materials and Methods:This study was based on 122 TMJs of 61 patients who complain of TMJ pain in only one side but were revealed to have disc displacement in both TMJs according to MRI findings. The signal intensities of regions of interest (ROIs) in retrodiscal tissues were measured using T1-, and T2-weighted MRI images. The RSIs of retrodiscal tissues were referenced to the signal intensities of the ROIs of brain gray matter. The relationships between the RSI of retrodiscal tissue and joint pain, joint effusion, condylar degenerative change, and degree of disc displacement were examined. In addition, the relationships between joint pain and joint effusion, condylar degenerative change, and degree of disc displacement were examined.
Results:On T1-weighted MR images, the painful TMJs showed significantly higher retrodiscal tissue RSI than non-painful TMJs. In addition, there is an association between joint pain and the degree of disc displacement. However, on T2-weighted MR images, the RSIs of retrodiscal tissues didn"t show any significant differences with regard to joint pain, joint effusion, condylar degenerative change, and degree of disc displacement.
Conslusions:The signal intensity of retrodiscal tissue can be used as a diagnostic marker for painful TMJ. However, the overall results suggest the signal intensity of retrodiscal tissue has a limited diagnostic significance in determining the pathologic status of TMJ.
|
|
|
KEYWORD
|
|
|
temporomandibular joint pain, magnetic resonance imaging, signal intensity
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
|
|