Estimated masticatory forces in patients before orthognathic surgery

Gregory S. Tate; Gaylord S. Throckmorton; Edward Ellis; Douglas P. Sinn; Diane J. Blackwood

doi:10.1016/0278-2391(94)90393-X

Estimated masticatory forces in patients before orthognathic surgery

Gregory S. Tate, Gaylord S. Throckmorton, Edward Ellis, Douglas P. Sinn, Diane J. Blackwood

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

There has been relatively little study of masticatory forces in dentofacial deformity patients before orthognathic surgery. This study used a mathematical equation based on electromyographic activity (EMG) during mastication and forces obtained during isometric bites to estimate masticatory forces in 55 control subjects and 48 patients. Subjects chewed on a constant bolus while EMG recordings were made bilaterally from the superficial masseter, anterior temporalis, and posterior temporalis muscles. Unilateral isometric bite forces in the first molar position and simultaneous EMGs were recorded in these same subjects. Superficial masseter muscle activity and isometric bite forces were strongly correlated. The slope of masseter EMG versus isometric force was used to estimate the masticatory forces. Males were found to have significantly higher estimated masticatory forces than females.

Original language	English (US)
Pages (from-to)	130-136
Number of pages	7
Journal	Journal of Oral and Maxillofacial Surgery
Volume	52
Issue number	2
DOIs	https://doi.org/10.1016/0278-2391(94)90393-X
State	Published - Feb 1994
Externally published	Yes

ASJC Scopus subject areas

Oral Surgery
Surgery
Otorhinolaryngology

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10.1016/0278-2391(94)90393-X

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title = "Estimated masticatory forces in patients before orthognathic surgery",

abstract = "There has been relatively little study of masticatory forces in dentofacial deformity patients before orthognathic surgery. This study used a mathematical equation based on electromyographic activity (EMG) during mastication and forces obtained during isometric bites to estimate masticatory forces in 55 control subjects and 48 patients. Subjects chewed on a constant bolus while EMG recordings were made bilaterally from the superficial masseter, anterior temporalis, and posterior temporalis muscles. Unilateral isometric bite forces in the first molar position and simultaneous EMGs were recorded in these same subjects. Superficial masseter muscle activity and isometric bite forces were strongly correlated. The slope of masseter EMG versus isometric force was used to estimate the masticatory forces. Males were found to have significantly higher estimated masticatory forces than females.",

author = "Tate, {Gregory S.} and Throckmorton, {Gaylord S.} and Edward Ellis and Sinn, {Douglas P.} and Blackwood, {Diane J.}",

note = "Funding Information: * Research Fellow, Oral and Maxillofacial Surgery, University of Texas Southwestern Medical Center, Dallas, TX. t Associate Professor, Cell Biology and Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX. t Associate Professor, Oral and Maxillofacial Surgery, University of Texas Southwestern Medical Center, Dallas, TX.. 6 Professor and Chairman. Oral and Maxillofacial Surgery, -. vekity of Texas Southwestern Medical Center, Dallas, TX. 11G raduate Student, Biomedical Engineering, University of Texas at Arlington, Arlington, TX. 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 Maxillofaciaf Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75235-9109.",

year = "1994",

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doi = "10.1016/0278-2391(94)90393-X",

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N1 - Funding Information: * Research Fellow, Oral and Maxillofacial Surgery, University of Texas Southwestern Medical Center, Dallas, TX. t Associate Professor, Cell Biology and Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX. t Associate Professor, Oral and Maxillofacial Surgery, University of Texas Southwestern Medical Center, Dallas, TX.. 6 Professor and Chairman. Oral and Maxillofacial Surgery, -. vekity of Texas Southwestern Medical Center, Dallas, TX. 11G raduate Student, Biomedical Engineering, University of Texas at Arlington, Arlington, TX. 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 Maxillofaciaf Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75235-9109.

PY - 1994/2

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Estimated masticatory forces in patients before orthognathic surgery

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