The Influence of Mandibular Deviation on Body Functions

本研究的目的是探讨矫正下颌位置对人体功能的影响。我们评估了下颌偏斜TMD患者和正常人面部的三维不对称性、手指血液流动的微循环、由血压波动计算的心率变异性、手指皮肤表面温度、握力和站立时身体前屈。结果总结如下：1。患者面部三维不对称性较正常人严重。2 .正常人下颌位置改变时，移动颈部后手指血流微循环发生变化。心率变异性频谱分析的LF/HF比值明显低于正常人。提示患者的心血管调节功能受损。患者在矫正下颌骨位置后，LF/HF比值明显高于矫正前，接近正常时的比值。矫正下颌位置使6例患者中4例右手手指皮肤表面温度升高，3例左手手指皮肤表面温度升高，6例患者中0例右手手指皮肤表面温度下降，6.5例患者中2例左手手指皮肤表面温度下降。矫正下颌位置使18例患者中13例左右手握力增加，18.6例患者中9例另一只手握力增加。纠正下颌位置使16例患者站立时身体前屈率增加11例。结果表明，下颌偏斜对机体功能有一定的影响。

The purpose of this study was to investigate the effect to the human body functions with correcting the mandibular position. We evaluated the 3D asymmetry of faces, the microcirculation of the blood flow of fingers, the heart rate variability calculated from the blood pressure fluctuation, the skin surface temperature of fingers, the grip strength, and the body anteflexion on standing, in TMD patients with the mandibular deviation and normal subjects.The results were summarized as follows :1. The 3D asymmetry of faces in the patients is severer than that in normal.2. When the mandibular position of normal subjects was changed, the microcirculation of the blood flow of fingers was changed after moving necks.3. The LF/HF ratio of spectral analysis for the heart rate variability in the patients was significantly lower than in normal. It was suggested that the cardiovascular regulation of the patients was damaged. In the patients, the LF/HF ratio after correcting the mandibular position was significantly higher than before, and it was close to the ratio in normal.4. Correcting the mandibular position of the patients made the skin surface temperature of the fingers rise in the right hands in 4 of 6 and in the left hands in 3 of 6, and fall in the right hands in 0 of 6 and in the left hands in 2 of 6.5. Correcting the mandibular position of the patients made the grip strength increase in the handedness in 13 of 18 and in the other hand in 9 of 18.6. Correcting the mandibular position of the patients made the rate of the body anteflexion on standing increase in 11 of 16.From the results, it is suggested that the body functions are influenced by the mandibular deviation.