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KMID : 0360119930150030189
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Journal of the Korean Society of Maxillofacial Plastic Reconstructive Surgeons
1993 Volume.15 No. 3 p.189 ~ p.197
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The study on anterior displacement of disk in patients of temporomandibular joint internal derangement in magenic demineralized bone
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Abstract
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Temporomandibular Joint pain and dysfunction is a common is a common and important clinical problem. With the rcent advances in imaging technology, radiologists have made major contribution to the understanding of TMJ disease. The MRI has several
advantages over the conventional imaging methods. It possible to obtain surprisingly precise images of internal hard and soft tissues with MRI. It is not invasive without ionizing radiation. The avnormal disk position has been thought as the
cuase
of
TMJ internal derangement. But there are few methods to relate disk position to TMj internal derangement quantatively. The object of our study is to determine the amount of anterior displacement of articular disk in symptomatic patients related
each
symptoms. Using the method of Dr. Drace, we studied the 38 joints of 22 persons with susceptable TMJ internal derangement.
1. In determining the anterior displacement of TMJ articular disk, the junction between the posterior band and bilaminar zone was useful.
2. The mean anterior displacement of disk in reduction group and without reduction goup were 51.0° and 81.1° respectively. The difference was significant.
3. In the mean anterior displacement of disk, the pain without clicking group showed 84.8° and the clicking and pain group 70.8°, the clicking group respectively.
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