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1.
偏侧咀嚼的咀嚼肌肌电图分析   总被引:3,自引:0,他引:3  
目的:通过对偏侧咀嚼患者咀嚼肌肌电图的分析,评估:⑴偏侧咀嚼是否会影响咀嚼肌的肌功能状况,⑵这种影响与性别、偏侧咀嚼持续时间的关系。方法:用肌电图仪分别记录16例(男女各8人,平均32.4岁)持续不同时间的偏侧咀嚼组和10例正常对照组在牙列轻接触、中度咬合和最大咬合时的嚼肌和颞肌前束的肌电数据,计算嚼肌的活动不对称指数(ASMM)和颞肌前束的活动不对称指数(ASTA),然后进行统计学分析。结果:⑴偏侧咀嚼组与对照组ASMM和ASTA在中度咬合和最大咬合时,有显著性差异(P<0.05);(2)偏侧咀嚼持续时间为0.5~2年组与5年组ASMM和ASTA无显著性差异(P>0.05);(3)男性组与女性组ASMM和ASTA无显著性差异(P>0.05)。结论:偏侧咀嚼的确会损害咀嚼肌的肌功能状况,但这种损害在5年内没有明显变化且与性别无关。  相似文献   

2.
Statement of problem:

Chronic myofascial pain dysfunction syndrome (MPDS) has been a nightmare for patients suffering from it, who have been treated with various treatment options with varied outcomes. This population of patients has been neglected, due to nagging revisits to a clinician and decreased percentage of success.

Objective:

T-Scan-based immediate complete anterior guidance development (ICAGD) has been shown by a researcher to reduce the muscle hyperactivity consistent with MPDS. The purpose of this study is to evaluate the effect of reduced disclusion time in lateral excursions in treating the MPDS symptoms.

Materials and methods:

Fifty-one myofascial pain patients with symptoms in the area of the head and neck region were treated with ICAGD. The quantified force and time data from T-Scan records were used to correct the prolonged disclusion time, and the subjects were assessed for the symptom relief. The Wilcoxon Signed Ranks Test was used for statistical analysis (P<0·05 denotes significant changes).

Results:

The changes in disclusion time and intensity of various symptoms were found to be statistically significant (P<0·05) from Day 1 onwards, and patients were relieved of their symptoms after reduction of disclusion time of less than 0·5 seconds.

Conclusion:

The results clearly indicated that ICAGD protocol reduces musculoskeletal-based symptoms of MPDS patients, and this protocol can prove beneficial for the clinical treatment success.  相似文献   


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