Evaluation and analysis of facial somatosensory changes of chronic masticatory muscle pain patients with quantitative sensory testing

• Published in: Zhonghua kouqiang yixue zazhi Vol. 50; no. 5; p. 286
• Main Authors: Wang, Yang, Yang, Guangju, Kang, Yanfeng, Zhao, Yanping, Xie, Qiufei
• Format: Journal Article
• Language: Chinese
• Published: China 01.05.2015
• Subjects: Case-Control Studies; Chronic Pain - physiopathology; Cold Temperature; Face; Hot Temperature; Humans; Hyperalgesia - diagnosis; Hyperalgesia - physiopathology; Hypesthesia - diagnosis; Hypesthesia - physiopathology; Masticatory Muscles - physiopathology; Myalgia - physiopathology; Pain Measurement - methods; Pain Threshold - physiology
• ISSN: 1002-0098

To evaluate and analysis facial somatosensory changes of patients with chronic masticatory muscle pain (MMP) quantitatively. The seven parameters of standardized quantitative sensory testing (QST) protocol were used to test the pain sites, contralateral sites of masticatory muscles of 20 chronic MMP patients and the same sites of right masticatory muscles of 20 matched healthy controls. QST thresholds were compared within groups using paired t test and between groups using unpaired t test. Compared to the controls, all seven parameters of bilateral sides of patients had changed. Mainly cold detection thresholds [(-1.2±0.5) and (-1.7±0.9) °C] and cold pain thresholds [(27.6±2.3) and (27.0±2.0) °C] of pain and contralateral sides increased significantly, while warm detection thresholds [(2.0±1.1) and (2.1±1.2) °C], heat pain thresholds [(37.9±3.2) and (39.7±3.9) °C], and mechanical pain thresholds [(49.3±34.1) and (111.8±86.3) mN] of pain and contralateral sides decreased significantly (P<0.05). Mechanical dete