期刊导航

论文摘要

深覆矫治过程中平面导板升高咬合垂直距离的肌电图研究

Myoelectricity study on wearing flat bite plate under different raised distances in deep overbite therapy

作者:徐建光 王旭霞 任旭升 张君 李娜

Author:XU Jian-guang, WANG Xu-xia, REN Xu-sheng, ZHANG Jun, LI Na

收稿日期:2009-06-25          年卷(期)页码:2009,27(03):301-

期刊名称:华西口腔医学杂志

Journal Name:West China Journal of Stomatology

关键字:重度深覆,平面导板,升高距离,肌电活动,

Key words:deep overbite,flat bite plate,raised dimension,myoelectrical activity,

基金项目:

中文摘要

目的研究平面导板辅助固定矫治器治疗重度深覆患者的早期,平面导板戴入后患者的颞肌前束(TA)和咬肌(MM)在静息状态下的肌电活动变化,探讨平面导板戴用过程中咬合垂直距离的最佳升高距离。方法选择重度深覆患者36例,随机分为D、D+2和D+4共3个试验组,戴入平面导板后的咬合升高距离分别为息止间隙、息止间隙加2 mm、息止间隙加4 mm。另外选择34例个别正常个体作为对照组。利用肌电仪分析试验组患者治疗前和戴入平面导板2周后TA、MM在静息状态下的肌电活动变化,并与对照组作比较。结果治疗前,试验组的肌电值明显高于对照组(P0.05)。结论平面导板戴入后,咬合垂直距离升高幅度超过息止间隙,对重度深覆患者咀嚼肌的功能恢复较为有利。

英文摘要

Objective To analyze changes of myoelectrical activity of anterior funicle of temporal muscle(TA) and masseter muscle(MM) after raising vertical distance of occlusion by flat bite plate during treatment of deep overbite in order to approach an optimal raised vertical distance. Methods A total of 70 persons were selected and divided into two groups: Experiment group(36 patients) with deep overbite and control group(34 persons) with individual normal occlusion. The experiment group was subdivided into three groups that were respectively raised D, D+2 mm and D+4 mm(D means free way space, mm). Electromyologram(EMG) was utilized to measure the average peak potential of TA and MM on quiescent condition before treatment and two weeks after wearing flat bite plate. Results 1)Before treatment, the average peak potential of experiment group was obviously higher than that of the control group(P

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