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作者研究创伤(牙合)时牙周血液动力学和咀嚼肌的生物电活动,检查有明显牙周炎的深复(牙合)创伤骀病人20例;对照组28名健康人,正常(牙合);年龄18～44岁。用光体积描记法研究牙周血液动力学。在进行咀嚼功能试验时(随意咀嚼榛子仁800mg)检查双侧嚼肌和颞肌的肌电图。研究结果:对照组牙周光体积描记指数0.77±0.06相对单位,血管紧张度指数15.98±1.27％,外周阻力指数72.07±2.41％。病例组血管紧张度指数增高到24.99±1.48％,外周阻力指数增到113.27±4.7％,表明牙周组织血管外周阻力失常。病例组咀嚼运动时间增加,嚼肌和颞肌生物电活动一时间多于正常,生物电静息时间也稍增多,导致兴奋和抑制过程的相互关系紊乱,咀嚼肌处于活动状态的时间延长,在咀嚼过程中肌肉活动周期紊乱,咀嚼持续时间
The authors studied the periodontal hemodynamics and the bioelectric activity of the masticatory muscles during trauma (occlusal occlusion), examined 20 cases of deep complex (occlusal) wounds with obvious periodontitis, and 28 healthy subjects in the control group with normal Together); aged 18 to 44 years old. Study of periodontal hemodynamics by photoplethysmography. In the chewing function test (free to chew hazelnut 800mg) check the bilateral chewing muscle and temporal muscle EMG. Results: In the control group, the periodontal photoplethysmography index was 0.77 ± 0.06, the vascular tone index was 15.98 ± 1.27% and the peripheral resistance index was 72.07 ± 2.41%. In the case group, the vascular tone index increased to 24.99 ± 1.48% and the peripheral resistance index increased to 113.27 ± 4.7%, indicating that peripheral vascular vascular resistance was abnormal in periodontal tissues. In the case group, the time of chewing movement increased, the electrical activity of the chewing muscles and temporal muscles was more than normal, and the resting time of bioelectricity also increased slightly, leading to the disturbance of excitation and inhibition process, the prolonged time of masticatory muscle activity, Muscle activity cycle during chewing disorders, chewing duration