Carlson C R, Sherman J J, Studts J L, Bertrand P M
Department of Psychology, University of Kentucky, Lexington 40506-0044, USA.
J Orofac Pain. 1997 Fall;11(4):291-7.
The purpose of this study was to determine the relationship between tongue position and mandibular muscle activity. Thirty-three subjects (28 women) between the ages of 18 and 34 years (mean = 22.1 years) with no prior injury to or pain in the jaw, mouth, or tongue participated in the study. Subjects were asked to rest quietly while baseline electromyographic recordings were made from the temporalis, masseter, and suprahyoid muscle regions. Afterwards, subjects were randomly assigned to conditions requiring them to position the tongue either "against the anterior palate" or "on the floor of the mouth, making sure the tip does not press against any part of the mouth." The results indicated that right temporalis activity was higher when the tongue was positioned against the roof of the mouth than when it was either at baseline or resting on the floor of the mouth (P < .03). A similar pattern of results was observed for the suprahyoid muscle group (P < .01). There were no significant differences in masseter muscle activity as a function of tongue position (Ps > .20). These findings suggest caution in labeling the "rest" position of the tongue and indicate that further study of the relationship between tongue position and orofacial pains in needed.
本研究的目的是确定舌位与下颌肌肉活动之间的关系。33名年龄在18至34岁之间（平均22.1岁）、颌部、口腔或舌头此前无损伤或疼痛的受试者（28名女性）参与了本研究。受试者被要求安静休息，同时从颞肌、咬肌和舌骨上肌群区域进行肌电图基线记录。之后，受试者被随机分配到不同条件下，要求他们将舌头置于“抵住硬腭前部”或“置于口腔底部，确保舌尖不接触口腔任何部位”。结果表明，当舌头抵住上腭时，右侧颞肌的活动高于基线水平或置于口腔底部时（P < .03）。舌骨上肌群也观察到类似的结果模式（P < .01）。咬肌活动在舌位不同时无显著差异（P > .20）。这些发现提示在确定舌头的“休息”位置时需谨慎，并表明需要进一步研究舌位与口面部疼痛之间的关系。
