Sato S, Goto S, Takanezawa H, Kawamura H, Motegi K
Department of Oral and Maxillofacial Surgery I, Tohoku University, School of Dentistry, Sendai, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1996 May;81(5):516-21. doi: 10.1016/s1079-2104(96)80039-4.
The purpose of this study was to clarify electromyographic and mandibular kinesiographic properties of the chewing movements in patients with unilaterally painful nonreducing disk displacement of the temporomandibular joint.
Chewing movement in 50 female patients was evaluated by electromyograph and mandibular kinesiograph, and the results were compared with those in 31 normal controls.
In the analysis by electromyograph, some differences between patients and controls were found. In the analysis by mandibular kinesiograph, chewing movement showed deviation to the chewing side in the TMJ-affected-side chewing but did not show deviation in the TMJ-unaffected-side chewing in the horizontal plane. The maximal anteroposterior width between opening and closing paths in the sagittal plane was smaller in the experimental subjects.
These differences between patients and controls may be helpful to diagnosis for painful nonreducing disk displacement of the temporomandibular joint.
本研究旨在阐明颞下颌关节单侧疼痛性不可复性盘移位患者咀嚼运动的肌电图和下颌运动描记图特征。
采用肌电图仪和下颌运动描记仪对50例女性患者的咀嚼运动进行评估，并将结果与31例正常对照者进行比较。
在肌电图分析中，发现患者与对照者之间存在一些差异。在下颌运动描记图分析中，在患侧咀嚼时咀嚼运动在水平面偏向咀嚼侧，但在未患侧咀嚼时未出现偏斜。矢状面开口和闭口路径之间的最大前后宽度在实验对象中较小。
患者与对照者之间的这些差异可能有助于颞下颌关节疼痛性不可复性盘移位的诊断。
