Manns A, Miralles R, Santander H, Valdivia J
J Prosthet Dent. 1983 Nov;50(5):700-9. doi: 10.1016/0022-3913(83)90213-5.
Occlusal splints constructed at three different vertical heights were used to study the influence of vertical dimension in the etiology of bruxism and MPD syndrome. The vertical dimension of least EMG activity was determined for each of 75 patients who were randomly divided into three groups according to the vertical dimension at which the occlusal splint was constructed. Group I occlusal splints were constructed at 1 mm from the occlusal vertical dimension, group II splints at 4.42 mm, and group III splints at 8.15 mm. Results showed a faster and more complete reduction in clinical symptoms for groups II and III than for group I. The temporary use of occlusal splints with a vertical height exceeding the physiologic rest position did not encourage a greater muscular tonus or hyperactivity of jaw muscles. It can be concluded that elongation of elevator muscles to or near the vertical dimension of least EMG activity by means of occlusal splints is more effective in producing neuromuscular relaxation.
制作了三种不同垂直高度的咬合板，用于研究垂直距离在磨牙症和颞下颌关节紊乱综合征病因学中的影响。根据制作咬合板的垂直距离，将75例患者随机分为三组，确定每组患者肌电图活动最少时的垂直距离。第一组咬合板在咬合垂直距离上方1毫米处制作，第二组在4.42毫米处，第三组在8.15毫米处。结果显示，第二组和第三组临床症状的减轻比第一组更快、更彻底。临时使用垂直高度超过生理休息位的咬合板，不会导致更大的肌肉张力或颌肌活动亢进。可以得出结论，通过咬合板将升肌延长至肌电图活动最少的垂直距离或接近该距离，在产生神经肌肉松弛方面更有效。
