Functional evaluation of jaw and suprahyoid muscle activities during chewing
Functional evaluation of jaw and suprahyoid muscle activities during chewing
复制标题
咀嚼过程中下颌和舌骨上肌活动的功能评估
DOI：
10.1111/joor.13373
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发表时间：
2022
影响因子：
2.9
通讯作者：
Inoue Makoto
中科院分区：
文献类型：
--
作者：
Sasa Anna;Kulvanich Sirima;Hao Naohito;Ita Reiko;Watanabe Masahiro;Suzuki Taku;Magara Jin;Tsujimura Takanori;Inoue Makoto
背景：咀嚼任务的类型如何影响相关肌肉活动以及舌骨上肌如何影响人类的咀嚼功能尚不清楚。目的探讨自由咀嚼和单侧咀嚼以及工作侧和非工作侧咀嚼时舌骨上肌活动的差异。材料与方法20名健康志愿者分别以自由咀嚼和单侧咀嚼两种方式咀嚼花生和两种不同类型的米饼，同时记录咬肌和舌骨上肌的表面肌电图。比较各组咀嚼时间、咀嚼次数和咀嚼速率。此外，我们还比较了两侧咬肌和舌骨上肌每咀嚼周期的活动情况。结果单侧咀嚼组咀嚼时间明显长于自由咀嚼组，咀嚼率明显高于自由咀嚼组。不同食物的咀嚼时间差异显著；食物越硬，持续时间越长。咀嚼软米饼干时，咀嚼速率和舌骨上活性显著提高。咬肌活动在咀嚼侧高于非咀嚼侧，而舌骨上活动在两侧之间没有差异。结论舌骨上肌在咀嚼过程中的功能作用和咀嚼任务之间存在差异，但在咀嚼侧和非咀嚼侧之间没有差异。
BackgroundIt has not yet been clarified how the type of the chewing task affects related muscle activity and how the suprahyoid muscles contribute to masticatory function in humans.ObjectivesThis study aimed to investigate the difference in the suprahyoid muscle activity between the freely and unilaterally chewing tasks and between the working and non‐working sides during chewing.Materials and MethodsTwenty healthy volunteers were instructed to chew peanuts and two different types of rice crackers in two ways: freely and unilaterally while surface electromyograms of the masseter and suprahyoid muscles were recorded. The chewing duration, number of chewing cycles and chewing rate were compared between the tasks. Furthermore, the masseter and suprahyoid muscle activities per chewing cycle were compared between the sides.ResultsThe chewing duration was significantly longer, and the chewing rate was significantly higher during unilaterally chewing than freely chewing. The chewing duration differed significantly among the different foods; the harder the food, the longer the duration. Chewing rate and suprahyoid activity were significantly higher during soft rice cracker chewing. Masseter activity was higher on the chewing side than on the non‐chewing side while there was no difference in suprahyoid activity between the sides.ConclusionThe current results demonstrate a difference in the masticatory efficacy between the chewing tasks and a functional role of the suprahyoid muscles during chewing, which does not differ between the chewing and non‐chewing sides.