악관절 및 근육기능장애환자에서 교합안정장치의 효과에 관한 연구 : PRI 측정에 의한 연구

Abstract

[한글]

연세대학교 치과병원 교합과에서 교합 안정장치 요법을 받은 20명의 실험군과 악관절 및 근육 기능 장애 증상이 있는데 치료를 받지 않은 6명의 증상군, 증상이 없는 8명의 정상군을 대상으로 8주간에 걸쳐 Denar사의 Pantograph를 사용해서 기록된 한계 운동을 측정하여 얻은 PRI (Pantographic Reproducibility Index)를 통계학적으로 비교 분석하여 다음과 같은 결론을 얻었다.

1. 대조군내 정상군과 증상군에서 PRI는 8주 동안 통계학적으로 유의한 변화를 나타내지 앉았다(P>.05).

2. 증상군의 PRI는 매 측정 시기에 정상군과 비교해 통계학적으로 유의성 있게 높았다(P<.05).

3. 이갈이군의 PRI는 매 측정 신기에 정상군과 비교하여 유의차가 없었다(P>.05).

4. 이갈이군을 제외한 실험군에서 PRI는 교합 안정장치 요법후 통계학적으로 유의성 있는 감소를 보여 주었다(P<.01).

5. 실험군내에서 근육 장애군은 4주, 장애군은 8주만에 PRI가 감소되어 정상군과 비교해 유의차가 없었다(P>.05).

[영문]

One of the signs and symptoms of TMJ and muscle dysfunction syndrome is incoordinated mandibular movements. The PRI quantitates the incoordinated movement and gives the relative severity of TMJ and muscle dysfunction syndrome. The purpose

of this study was to provide insight into the effects of the occlusal biteplane splint on TMJ and muscle dysfunction syndrome by measurements of PRI.

For this study, 20 experimental subjects who were treated with occlusal biteplane splints at the Department of Occlusion in Dental Infirmary, Yonsei University, symptomatic control subjects who were not treated at all, and 8 normal control subjects who had no symptoms of TMJ and muscle dysfunction syndrome were selected.

For each subject, two pantographic tracings were recorded on four different sessions, before treatment, after 2 weeks, 4 weeks, and 8 weeks respectively. And the PRI scores were calculated and statistically analyzed.

Within the limits of this study, the following results were obtained.

1 No statistically significant change in PRI scores occurred for normal group (P>.05).

2. Symptom group who were not treated initially showed statistically high PRI scores compared to the scores of control group and showed no statistically significant change after 2 months.

3. Bruxism group showed no PRI difference compared to the scores of control group (P>.05).

4. Experimental group except the bruxism group showed statistically significant reduction in PRI scores after occlusal biteplane splint therapy (P <.01).

5. It took 4 weeks for myalgia group and 8 weeks for TMJ derangement group to have significant reduction of PRI scores.