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KMID : 0378419870070120067
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Dental Focus
1987 Volume.7 No. 12 p.67 ~ p.79
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THE TEMPOROMANDIBULAR JOINT
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Kim Jae-Duk
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Abstract
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Review of varying descriptions of the TMJ and its related structures and functions showed the considerable uncertainty and disagreement on the anatomic, histologic and biomechanic features. There was much information that needs further study and many disagreements to correlates with radiographic findings.
The questions can be summarized as followings;
1. Histological distinction between the poste-
rior band and the posterior attachment of the meniscus
2. Topographic description of the disc in normal and in disc displacement.
3. The function and insertion of the upper and
lower head of the lateral pterygoid muscle.
4. The feature of the fascia between the upper
and lower head of the lateral pterygoid
muscle.
5. Possible correlation with the information obtained by NMRI; for example, in the case of anterior displacement,
i. the thickening of the fascial planes
between superior and inferior bellies.
ii. prominence of the fascial attachment of
the superior belly.
iii. less clear demarcation of the posterior band from posterior attachment.
6. The inclination of the articular eminence is not as steep as it appears to be on radiography, and the true articular disc space is wider than is radiographically apparent (Bell 1986).
7. The suggestion that the condyle disc assembly is stopped by the medial pole resting into the upper most medial portion of the triangular fossa (Dawson 1985) has to be con-firmed.
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KEYWORD
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