Bite forces before and after surgical correction of mandibular prognathism

Edward Ellis, Gaylord S. Throckmorton, Douglas P. Sinn

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

Purpose: The purpose of this investigation was 1) to compare morphologic parameters and voluntary bite forces between controls and a sample of patients with mandibular prognathism before surgical correction, and 2) to examine how these patients' bite forces adapt after treatment. Patients and Methods: Twenty-four prognathic patients were compared with 24 controls before and up to 3 years after mandibular setback surgery. Measures of skeletal morphology and maximum isometric bite force were made on all subjects over time. Statistical analysis compared the controls, the patients before surgery, and the patients after surgery. Results: Surgical shortening of the mandible averaged 4.1 mm, bringing most skeletal measures into the normal range. Before surgery, the jaw muscle mechanical advantages for patients were significantly smaller than for controls; surgery did not significantly change this relationship. Before surgery the patients had maximum isometric bite forces that were significantly less than those of controls. Bite forces steadily increased after surgery, approaching normal values within 2 to 3 years. Conclusions: The results of this study suggest that correction of mandibular prognathism by mandibular setback surgery produces some significant functional benefits.

Original languageEnglish (US)
Pages (from-to)176-181
Number of pages6
JournalJournal of Oral and Maxillofacial Surgery
Volume54
Issue number2
DOIs
StatePublished - 1996
Externally publishedYes

Fingerprint

Angle Class III Malocclusion
Bite Force
Reference Values
Orthognathic Surgery
Mandible

ASJC Scopus subject areas

  • Dentistry(all)
  • Surgery

Cite this

Bite forces before and after surgical correction of mandibular prognathism. / Ellis, Edward; Throckmorton, Gaylord S.; Sinn, Douglas P.

In: Journal of Oral and Maxillofacial Surgery, Vol. 54, No. 2, 1996, p. 176-181.

Research output: Contribution to journalArticle

Ellis, Edward ; Throckmorton, Gaylord S. ; Sinn, Douglas P. / Bite forces before and after surgical correction of mandibular prognathism. In: Journal of Oral and Maxillofacial Surgery. 1996 ; Vol. 54, No. 2. pp. 176-181.
@article{9934bf14e4b44545a72d6824194aaad7,
title = "Bite forces before and after surgical correction of mandibular prognathism",
abstract = "Purpose: The purpose of this investigation was 1) to compare morphologic parameters and voluntary bite forces between controls and a sample of patients with mandibular prognathism before surgical correction, and 2) to examine how these patients' bite forces adapt after treatment. Patients and Methods: Twenty-four prognathic patients were compared with 24 controls before and up to 3 years after mandibular setback surgery. Measures of skeletal morphology and maximum isometric bite force were made on all subjects over time. Statistical analysis compared the controls, the patients before surgery, and the patients after surgery. Results: Surgical shortening of the mandible averaged 4.1 mm, bringing most skeletal measures into the normal range. Before surgery, the jaw muscle mechanical advantages for patients were significantly smaller than for controls; surgery did not significantly change this relationship. Before surgery the patients had maximum isometric bite forces that were significantly less than those of controls. Bite forces steadily increased after surgery, approaching normal values within 2 to 3 years. Conclusions: The results of this study suggest that correction of mandibular prognathism by mandibular setback surgery produces some significant functional benefits.",
author = "Edward Ellis and Throckmorton, {Gaylord S.} and Sinn, {Douglas P.}",
year = "1996",
doi = "10.1016/S0278-2391(96)90443-7",
language = "English (US)",
volume = "54",
pages = "176--181",
journal = "Journal of Oral and Maxillofacial Surgery",
issn = "0278-2391",
publisher = "W.B. Saunders Ltd",
number = "2",

}

TY - JOUR

T1 - Bite forces before and after surgical correction of mandibular prognathism

AU - Ellis, Edward

AU - Throckmorton, Gaylord S.

AU - Sinn, Douglas P.

PY - 1996

Y1 - 1996

N2 - Purpose: The purpose of this investigation was 1) to compare morphologic parameters and voluntary bite forces between controls and a sample of patients with mandibular prognathism before surgical correction, and 2) to examine how these patients' bite forces adapt after treatment. Patients and Methods: Twenty-four prognathic patients were compared with 24 controls before and up to 3 years after mandibular setback surgery. Measures of skeletal morphology and maximum isometric bite force were made on all subjects over time. Statistical analysis compared the controls, the patients before surgery, and the patients after surgery. Results: Surgical shortening of the mandible averaged 4.1 mm, bringing most skeletal measures into the normal range. Before surgery, the jaw muscle mechanical advantages for patients were significantly smaller than for controls; surgery did not significantly change this relationship. Before surgery the patients had maximum isometric bite forces that were significantly less than those of controls. Bite forces steadily increased after surgery, approaching normal values within 2 to 3 years. Conclusions: The results of this study suggest that correction of mandibular prognathism by mandibular setback surgery produces some significant functional benefits.

AB - Purpose: The purpose of this investigation was 1) to compare morphologic parameters and voluntary bite forces between controls and a sample of patients with mandibular prognathism before surgical correction, and 2) to examine how these patients' bite forces adapt after treatment. Patients and Methods: Twenty-four prognathic patients were compared with 24 controls before and up to 3 years after mandibular setback surgery. Measures of skeletal morphology and maximum isometric bite force were made on all subjects over time. Statistical analysis compared the controls, the patients before surgery, and the patients after surgery. Results: Surgical shortening of the mandible averaged 4.1 mm, bringing most skeletal measures into the normal range. Before surgery, the jaw muscle mechanical advantages for patients were significantly smaller than for controls; surgery did not significantly change this relationship. Before surgery the patients had maximum isometric bite forces that were significantly less than those of controls. Bite forces steadily increased after surgery, approaching normal values within 2 to 3 years. Conclusions: The results of this study suggest that correction of mandibular prognathism by mandibular setback surgery produces some significant functional benefits.

UR - http://www.scopus.com/inward/record.url?scp=0030039058&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030039058&partnerID=8YFLogxK

U2 - 10.1016/S0278-2391(96)90443-7

DO - 10.1016/S0278-2391(96)90443-7

M3 - Article

C2 - 8604066

AN - SCOPUS:0030039058

VL - 54

SP - 176

EP - 181

JO - Journal of Oral and Maxillofacial Surgery

JF - Journal of Oral and Maxillofacial Surgery

SN - 0278-2391

IS - 2

ER -