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A STUDY OF THE POSTERIOR SLOPE OF THE ARTICULAR EMINENCE IN PATIENTS WITH INTERNAL DERANGEMENT

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Abstract

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#ÃÊ·Ï#
This study was designed to investigate the effects of the posterior slope of the
articular eminence and the condylar angulation to the posterior slope of the articular
eminence on internal derangement of TMJ. The materials consisted of 78 transcranial
oblique lateral projections of 31 normal subjects and 47 internal derangement patients.
The results were as follows :
1. The posterior slope of the articular eminences in normal group were larger than
that in abnormal group, but there were not significant differences between each group
about the condylar angulation to the posterior slope of the articular eminences.
2. The differences between in the right and left sides in patients who were affected
unilaterally and bilaterally were larger than that in normal groups.
3. In patients affected unilaterally, there were not significant differences between
affected joints and unaffected joints about the posterior slope of the articular eminence
and the condylar angulation to the posterior slope of the articular eminence.
4. In abnormal group, there were significant differences between each group about
condylar angulation to the post, slope of the articular eminence (ant. disk displacement
without reduction > fibrous adhesion > ant. disk displacement with reduction), but not
about the post, slope of the articular eminence.

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