Carlson N, Moline D, Huber L, Jacobson J
Division of Family Dentistry, University of Iowa Hospital and Clinics, College of Dentistry.
J Prosthet Dent. 1993 Jul;70(1):39-43. doi: 10.1016/0022-3913(93)90035-m.
The muscle relaxation appliance (MRA) has been used in the treatment of myofascial pain dysfunction (MPD) patients. The neuromuscular orthotic is a version of the MRA and is constructed from a three-dimensional mandibular position when muscles are in a state of minimal electromyographic (EMG) activity. The purpose of this study was to investigate the affect of two muscle relaxation appliances and a placebo (cotton rolls) on EMG activity of the functional masseter and anterior temporalis muscles. A centric relation mandibular MRA and a neuromuscular orthotic were constructed under controlled protocols for 12 women MPD patients with a mean age of 38 years. EMG measurements were taken during a 10-second clench of both appliance and placebo. No statistical difference was found between the centric relation mandibular MRA and neuromuscular orthotic. A statistically significant difference was found between the mean EMG values of the placebo and two treatment appliances.
肌肉松弛矫治器（MRA）已被用于治疗肌筋膜疼痛功能障碍（MPD）患者。神经肌肉矫正器是MRA的一种形式，它是在肌肉处于最小肌电图（EMG）活动状态时，根据三维下颌位置制作而成。本研究的目的是调查两种肌肉松弛矫治器和一种安慰剂（棉卷）对功能性咬肌和颞肌前束EMG活动的影响。在受控方案下，为12名平均年龄38岁的女性MPD患者制作了正中关系下颌MRA和神经肌肉矫正器。在佩戴矫治器和安慰剂的情况下，进行10秒紧咬动作时测量EMG。正中关系下颌MRA和神经肌肉矫正器之间未发现统计学差异。安慰剂与两种治疗矫治器的平均EMG值之间存在统计学显著差异。
