陕西医学杂志Issue(5)：518-520,523,4.DOI:10.3969/j.issn.1000-7377.2015.05.002
牙尖交错位最大紧咬时胸锁乳突肌与咬肌肌电研究
Electromyographic activity of the masseter and sternocleidomastoid muscle during maximal voluntary clenching in intercuspal position
摘要
Abstract
Objective :To investigate the relationship between occlusal force level and the surface electro‐myography(SEMG) activity of sternocleidomastoid muscle (SCM )versus masseter muscle(MM ) during maximal voluntary clenching (MVC) in intercuspal position(ICP) .Methods :T‐Scan III system and BioEMG III system were used to record SEMG activity of the SCM and of the MM simultaneously .Recordings which were obtained from 25 healthy young adult during MVC were analyzed in different occlusal force levels .Normalized SEMG value was ratio of SEMG values of different occlusal force levels to MVC .Results :There was no difference between bite force , SEMG value of left side and right side in ICP‐MVC .Ratios of sternocleidomastoid(SCM ) to masseter muscle activity range from (9 .13 ± 4 .77)% to(10 .23 ± 6 .47)% .In normalized SEMG value of the MM and SCM ,which increased before 75% ‐MVC ,and decreased after 75% ‐ICP(P< 0 .05) .Conclusion :The results confirmed that a lower SEMG activity of SCM is similar to MM when the highest level of bite force achieved during MVC in ICP .关键词
咬合力/咬肌/病理生理学/肌肉骨骼生理学/牙尖交错位Key words
Bite force/Masseter muscle/physiopathology Masculoskeletal physiology/Intercuspal position分类
医药卫生引用本文复制引用
郭少雄,李宝勇,张渊,刘璐,邓琪,王美青..牙尖交错位最大紧咬时胸锁乳突肌与咬肌肌电研究[J].陕西医学杂志,2015,(5):518-520,523,4.基金项目
国家自然科学基金资助项目 （）
