Ferrario V F, Sforza C, Miani A, D'Addona A, Barbini E
Laboratorio di Anatomia Funzionale dell'Apparato Stomatognatico, Facoltà di Medicina e Chirurgia, Università degli Studi, Milano, Italy.
J Oral Rehabil. 1993 May;20(3):271-80. doi: 10.1111/j.1365-2842.1993.tb01609.x.
Electromyographic activity of anterior temporal and masseter muscles was measured in 92 young healthy men and women with sound dentitions during rest position, contact in centric occlusion and clench. Male and female mean potentials were similar except in clench, where males had higher electromyographic levels. Mean pooled electromyographic potentials were 1.9 microV (TA) and 1.4 microV (MM) during rest position, 6.5 microV (TA) and 2.8 microV (MM) during contact in centric occlusion. Mean maximum voluntary clench potentials were 181.9 microV (TA) and 216.2 microV (MM) in men, 161.7 microV (TA) and 156.8 microV (MM) in women. Examined muscles were more asymmetric at low electromyographic activity (rest and centric occlusion) with the temporal muscle less asymmetrical than the masseter. In females temporal muscle activity tended to dominate at every contraction level, while in males masseter activity was stronger in clench, and temporal activity in centric occlusion and in rest position.
在92名牙列健全的年轻健康男性和女性处于休息位、正中咬合接触和紧咬时，测量颞肌前束和咬肌的肌电活动。除紧咬时男性肌电水平较高外，男性和女性的平均电位相似。休息位时，平均合并肌电电位为颞肌前束1.9微伏、咬肌1.4微伏；正中咬合接触时，颞肌前束为6.5微伏、咬肌为2.8微伏。男性平均最大自主紧咬电位为颞肌前束181.9微伏、咬肌216.2微伏，女性为颞肌前束161.7微伏、咬肌156.8微伏。在低肌电活动（休息和正中咬合）时，所检查的肌肉更不对称，颞肌的不对称程度小于咬肌。在女性中，颞肌活动在每个收缩水平都倾向于占主导，而在男性中，咬肌活动在紧咬时更强，颞肌活动在正中咬合和休息位时更强。
