Diffuse noxious inhibitory controls in temporomandibular disorders

(1)本研究的第一个目的是确定佩戴口腔夹板是否会改变上肢振动、冷感、温感、冷痛感和热痛感的阈值。这些结果表明，短期佩戴口腔夹板可能会抑制一些主要由无髓C纤维介导的伤害性和感觉性输入，这可能归因于丘脑水平的注意因素的变化。(2)第二项研究旨在评估在夹板佩戴情况下传入输入对抗握力的有效性，我们得出结论，传入输入在夹板佩戴中起着重要作用。(3)本研究的第三个目的是探索在物理治疗过程中利用头颈部以外偏远部位的抗刺激和缺血性疼痛作为恢复肌肉力量的一种方法的可行性。这些发现表明，计数器IR…(4)第四项研究旨在评估咀嚼肌硬度测量的检验者内和检验者间的可靠性，并使用市售的肌肉硬度计确定咬合力/肌肉硬度特征。这些发现表明，在这种情况下，肌肉硬度的测量提供了可靠的咬肌生理信息。(5)本研究的第五个目的是了解在不同咬合力水平的短暂持续等长收缩期间，正常受试者和肌筋膜痛患者之间咬肌肌肉硬度的变化，并比较肌肉硬度，特别是在紧握任务后的恢复阶段。结果显示，患者与正常对照组之间无显著差异，但所有受试者肌肉硬度均随收缩而增加。我们的发现还表明，与正常受试者相比，患者在紧握任务后恢复到基线的时间延迟，尽管在所有受试者中都可以看到紧握任务后立即增加。较少

(1) The first aim of our study was to determine whether or not wearing of an oral splint changes the threshold of vibration, cool sensation, warm sensation, cold-induced pain, and heat-induced pain in the upper extremities. These results indicated that a short-term wearing of an oral splint possibly inhibits some nociceptive and sensory input that is primarily mediated by unmyelinated C fibers, and those could be attributed to some modulation by changes in attentional factors at the thalamus level.(2) The second study was designed to evaluate the efficacy of afferent inputs against grasp forces in splint wearing situation, and we concluded that afferent inputs play an important role in splint wearing.(3) The third purpose of this investigation was to explore the feasibility of utilizing counter irritation with ischemic pain at a remote site outside of the head and neck region as a method for restoring muscle force in a course of physical therapy. These findings indicate that counter ir … More ritation outside of the head and neck may be useful for increasing bite force.(4) The fourth study was designed to evaluate the intra-examiner and inter-examiner reliability of measurements of masticatory muscle hardness, and to determine the bite force / muscle hardness characteristics using a commercially-available muscle meter. These findings indicate that measurement of muscle hardness provides reliable physiologic information on the masseter muscle in this setting.(5) The fifth aim of the present study was to access any changes in the muscle hardness of the masseter muscle between normal subjects and myofascial pain patients during brief sustained isometric contractions at various bite force levels, and to compare muscle hardness, especially in terms of the recovery phase, after a clenching task. Our results showed that there was no significance difference between the patients and the normal controls, while the muscle hardness increased with contraction in all the subjects. Our findings also showed that the patients had a delayed return to the baseline after the clenching task compared to the normal subjects, although an immediate increase after the clenching task was seen in all subjects. Less