Gu Wei-ping, Yin Xin-min, Zhang Fei-min, Wei Xiao-long, Qian Zhi-yu, Wang Chen
Department of General Dentistry, Nanjing Medical University, Nanjing, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2013 Feb;48(2):105-8.
To access the effect of wireless biofeedback therapy on bruxism.
Ten voluntary bruxers (seven female and three male, mean age 26.1 years) were invited to participate in this clinical research. An electric resistance strain gauge was embedded in the position of canine of a maxillary splint for monitoring the abnormal clenching or grinding movement of teeth during sleep. The relevant details of bruxism events, including value of relative force, occurring time and duration were recorded and analyzed by the receiver device and monitoring program respectively. Meanwhile, for the purpose of nerve system and muscle relaxation, a watch-style device around the patient's wrist will vibrate to alert the patient of teeth grinding or clenching if the value of biting force and duration exceed the threshold. Total average episodes of bruxism and duration was observed during eight hours sleep, and was analyzed with one-way analysis of variance in SPSS 19.0 by the end of 6th week and three months following biofeedback therapy.
The average episodes of bruxism has declined dramatically from (9.8 ± 2.2) times to (3.0 ± 1.2) times during one night (P < 0.05), and the average duration of bruxism events was reduced from (20.7 ± 12.2) s to (10.0 ± 3.4) s (P < 0.05) after six weeks biofeedback therapy. By the end of three months, the average episodes declined to (2.9 ± 1.2) times (P < 0.05), and the average duration decline to (9.2 ± 2.9) s (P < 0.05) with contrast to preliminary night.
The pressure-based wireless biofeedback device is able to monitoring clenching and grinding of bruxism. The results suggest that biofeedback therapy may be an effective, novel and convenient measure for treatment of bruxism according to several months therapy.
评估无线生物反馈疗法对磨牙症的疗效。
邀请10名磨牙症志愿者（7名女性，3名男性，平均年龄26.1岁）参与本临床研究。在上颌夹板的尖牙位置嵌入电阻应变仪，以监测睡眠期间牙齿的异常紧咬或磨牙运动。磨牙症事件的相关细节，包括相对力值、发生时间和持续时间，分别由接收装置和监测程序记录并分析。同时，为了放松神经系统和肌肉，患者手腕上佩戴的手表式装置会在咬合力值和持续时间超过阈值时振动，提醒患者磨牙或紧咬。在生物反馈治疗后第6周和3个月末，观察8小时睡眠期间磨牙症的总平均发作次数和持续时间，并在SPSS 19.0中采用单因素方差分析进行分析。
生物反馈治疗6周后，磨牙症的平均发作次数从每晚（9.8±2.2）次大幅降至（3.0±1.2）次（P<0.05），磨牙症事件的平均持续时间从（20.7±12.2）秒降至（10.0±3.4）秒（P<0.05）。到3个月末，与治疗初期的夜晚相比，平均发作次数降至（2.9±1.2）次（P<0.05），平均持续时间降至（9.2±2.9）秒（P<0.05）。
基于压力的无线生物反馈装置能够监测磨牙症的紧咬和磨牙情况。结果表明，经过数月治疗，生物反馈疗法可能是一种治疗磨牙症的有效、新颖且便捷的措施。
