TY - JOUR
T1 - The effects of zygomatic complex fracture on masseteric muscle force
AU - Dal Santo, Frank
AU - Ellis, Edward
AU - Throckmorton, Gaylord S.
N1 - Funding Information:
Received from the University of Texas Southwestern Medical Center, Dallas. * Resident, Division of Oral and Maxillofacial Surgery. t Associate Professor. Division of Oral and Maxillofacial Suraerv. _ I $ Associate Professor, Department of Cell Biology and Neuroscience. This research was supported in part by a grant from the Chalmers J. Lyons Academy-James R. Hayward Research Fund. Address correspondence and reprint requests to Dr Ellis: Division of Oral and Maxillofacial Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75235-9031.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1992/8
Y1 - 1992/8
N2 - The masseter muscle often has been implicated as a primary cause of postreduction displacement of the fractured zygomatic complex. However, this contention has never been proved. This study compared masseter muscle force in 10 male controls with that in 10 male patients who had sustained unilateral zygomaticomaxillary complex (ZMC) fractures. Calculation of muscle force was based on measured bite force, electromyogram, and radiographic determination of muscle vectors. It was found that the masseter muscle in patients with ZMC fractures developed significantly less force than masseter muscle in controls. Following fracture, the masseter force slowly increased, but at 4 weeks following surgery the majority of patients were still well below control levels. The results of this study cast uncertainty on the role of the masseter muscle in postreduction displacement of the fractured ZMC.
AB - The masseter muscle often has been implicated as a primary cause of postreduction displacement of the fractured zygomatic complex. However, this contention has never been proved. This study compared masseter muscle force in 10 male controls with that in 10 male patients who had sustained unilateral zygomaticomaxillary complex (ZMC) fractures. Calculation of muscle force was based on measured bite force, electromyogram, and radiographic determination of muscle vectors. It was found that the masseter muscle in patients with ZMC fractures developed significantly less force than masseter muscle in controls. Following fracture, the masseter force slowly increased, but at 4 weeks following surgery the majority of patients were still well below control levels. The results of this study cast uncertainty on the role of the masseter muscle in postreduction displacement of the fractured ZMC.
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U2 - 10.1016/0278-2391(92)90267-4
DO - 10.1016/0278-2391(92)90267-4
M3 - Article
C2 - 1634969
AN - SCOPUS:0026644004
VL - 50
SP - 791
EP - 799
JO - Journal of Oral and Maxillofacial Surgery
JF - Journal of Oral and Maxillofacial Surgery
SN - 0278-2391
IS - 8
ER -