TY - JOUR
T1 - A preliminary study of maximum voluntary bite force and jaw muscle efficiency in pre-orthognathic surgery patients
AU - Dean, Jeffrey S.
AU - Throckmorton, Gaylord S.
AU - Ellis, Edward
AU - Sinn, Douglas P.
N1 - Funding Information:
Received from The Universitv of Texas Southwestern Medical Center, Dallas. * Resident, Division of Oral and Maxillofacial Surgery. t Associate Professor, Department of Cell Biology and Neuroscience. 4 Associate Professor, Division of Oral and Maxillofacial Surgery. 8 Professor and Chairman, Division of Oral and Maxillofacial Sur-gery. This research was supported by a grant from the American Association of Oral and Maxillofacial Surgeons. Address correspondence and reprint requests to Dr Ellis: Division of Oral and Maxillofacial Surgery, The University of Texas South-western Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75235-9031.
PY - 1992/12
Y1 - 1992/12
N2 - The functional state of dentofacial deformity patients before orthognathic surgery has received relatively little study. In this study, the ability to generate occlusal force was compared between 84 patients before treatment for various dentofacial deformities and 57 controls. Maximal and submaximal bite forces were measured at the incisor and right and left first molar bite positions. Electromyographic activity (EMG) was recorded bilaterally from the anterior temporalis, posterior temporalis, and masseter muscles during each bite. An efficiency ratio was calculated for the jaw muscles by dividing the level of EMG by the occlusal force. There was a reduced ability to generate occlusal forces in the patients before surgery, especially among female patients. The reductions in maximal occlusal force were correlated with reduced efficiency of the jaw muscles.
AB - The functional state of dentofacial deformity patients before orthognathic surgery has received relatively little study. In this study, the ability to generate occlusal force was compared between 84 patients before treatment for various dentofacial deformities and 57 controls. Maximal and submaximal bite forces were measured at the incisor and right and left first molar bite positions. Electromyographic activity (EMG) was recorded bilaterally from the anterior temporalis, posterior temporalis, and masseter muscles during each bite. An efficiency ratio was calculated for the jaw muscles by dividing the level of EMG by the occlusal force. There was a reduced ability to generate occlusal forces in the patients before surgery, especially among female patients. The reductions in maximal occlusal force were correlated with reduced efficiency of the jaw muscles.
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U2 - 10.1016/0278-2391(92)90228-R
DO - 10.1016/0278-2391(92)90228-R
M3 - Article
C2 - 1447607
AN - SCOPUS:0026484177
SN - 0278-2391
VL - 50
SP - 1284
EP - 1288
JO - Journal of Oral and Maxillofacial Surgery
JF - Journal of Oral and Maxillofacial Surgery
IS - 12
ER -