Electromyographic activity of the human masticatory muscles during submaximal clenching in the inter‐cuspal position

Journal of Oral Rehabilitation - Tập 16 Số 1 - Trang 63-70 - 1989
M. Naeije1, R. S. McCARROLL2, W.A. Weijs3
1Department of Masticatory Function, Academic Centre for Dentistry Amsterdam, University of Amsterdam, The Netherlands.
2Department of Masticatory Function, University of Amsterdam, Amsterdam, The Netherlands
3Department of Anatomy and Embryology, Academic Centre for Dentistry Amsterdam, University of Amsterdam, Amsterdam, The Netherlands

Tóm tắt

SummaryThe activity patterns of the masseter and the anterior temporal muscles were studied in twenty‐one healthy male subjects while clenching at 10, 20, 30, 40 and 50% of the maximum clenching level. At low clenching levels the temporal muscle activity tended to dominate, at high levels the masseter muscle activity was stronger (P < 0.001). The asymmetry in muscle activity also depended upon the clenching level (P < 0.001), while at each level the masseter muscle asymmetry was greater than the temporal muscle asymmetry (P < 0.05–P < 0.025). By comparing the electromyographic activities of the left and right side within each subject it was found that the masseter muscle with the higher electromyographic activity tended to have the larger cross‐sectional area (P < 0.01) and at the 50% clenching level it tended to be on the side with the greater number of post‐canine tooth contacts (P < 0.001).

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Tài liệu tham khảo

Bakke M., 1980, Distortion of maximal elevator activity by unilateral premature tooth contact, Scandinavian Journal of Dental Research, 80, 67

10.3109/00016357709064128

10.1111/j.1365-2842.1980.tb00459.x

10.1016/0003-9969(72)90147-1

10.1111/j.1365-2842.1974.tb00771.x

Ingervall B., 1975, Activity of temporal and masseter muscles in children with a lateral forced bite, Angle Orthodontics, 45, 249

10.1016/S0022-3913(84)80021-9

Moller E., 1966, The chewing apparatus. An electromyographic study to the action of the muscles of mastication and its correlation to facial morphology, Acta Physiologica Scandinavica, 69, 59

Moller E., 1974, Frontiers of Oral Physiology, Vol. 1, Physiology of Mastication, 121

Moritani T., 1979, Neural factors versus hypertrophy in the time course of muscle strength gain, American Journal of Physical Medicine, 58, 115

10.1111/j.1365-2842.1986.tb01305.x

10.1177/00220345790580070501

Randow K., 1976, The effects of an occlusal interference on the masticatory system, Odontologisk Revy, 27, 245

10.1111/j.1365-2842.1983.tb01470.x

10.1111/j.1600-0765.1978.tb00179.x

Weijs W.A., 1985, Cross‐sectional areas and estimated intrinsic strength of the human jaw muscles, Acta Morphologica Neerlando-Scandinavica, 23, 267

10.1002/ajpa.1330700403

10.1016/0022-3913(84)90229-4

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Thông tin xuất bản

Journal of Oral Rehabilitation

Tập 16 Số 1

63-70

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