Biomechanics of differences in lower facial height

Gaylord S. Throckmorton, Richard A. Finn, William H. Bell

Research output: Contribution to journalArticle

143 Citations (Scopus)

Abstract

A two-dimensional model which allows calculation of mechanical advantage of the human temporalis and masseter muscles is presented. The model is manipulated to demonstrate how selected differences in facial morphology affect the mechanical advantage of the muscles. The model is then used to evaluate the differences in mechanical advantage between patients with the long face syndrome and those with the short face syndrome. Differences in facial morphology between these two groups result in significant differences in the mechanical advantages of their muscles. Mechanical advantage may, in part, explain observed differences in bite force between the two groups. The model suggests that some surgical procedures used to correct facial disharmonies may have a significant effect on the mechanical advantage of the jaw muscles.

Original languageEnglish (US)
Pages (from-to)410-420
Number of pages11
JournalAmerican Journal of Orthodontics
Volume77
Issue number4
DOIs
StatePublished - 1980

Fingerprint

Biomechanical Phenomena
Muscles
Bite Force
Masseter Muscle
Jaw

Keywords

  • Biomechanics
  • bite force
  • facial height
  • masticating muscles
  • maxillofacial surgery

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Biomechanics of differences in lower facial height. / Throckmorton, Gaylord S.; Finn, Richard A.; Bell, William H.

In: American Journal of Orthodontics, Vol. 77, No. 4, 1980, p. 410-420.

Research output: Contribution to journalArticle

Throckmorton, Gaylord S. ; Finn, Richard A. ; Bell, William H. / Biomechanics of differences in lower facial height. In: American Journal of Orthodontics. 1980 ; Vol. 77, No. 4. pp. 410-420.
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