復位性関節円板前方偏位における咀嚼運動の臨床的研究

概要

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This study was carried out to investigate the effect of "anterior disk displacement with reduction" to chewing movement with the expectation that the analysis of chewing movements could deliver new aids for diagnosing the state of TMJ. 11 patients with reciprccal click and 10 normal subjects were selected. Right side chewing and left side chewing were recorded using Sirognathograph Analysing System and frontal projecticn of chewing movementswere observed. The conclusion was summerized as follows. 1. The group of patients with reciprocal click could be divided into chewing click (+) group and chewing click (-) group. Chewing click (+) group showed significantly (p<0.05) earlier opening click compared with chewing click (-) group. 2. Chewing click was observed only in non-symptomatic side chewing. The bigger test food was, the higher the frequency of chewing click became. 3. Normal subject group showed patterns with convex opening path but without deviation to non-chewing side. 4. Chewick click (+) group characteristically showed eight-shaped patters with sigmoid opening path. Chewing click (-) group showed two characteristic patterns. One is with concave opening path but without deviation to non-chewing side, and the other is with convex opening path and with deviation to non-chewing side.
日本補綴歯科学会の論文
1988-02-01