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 language | English (US) |
---|---|
Pages (from-to) | 410-420 |
Number of pages | 11 |
Journal | American Journal of Orthodontics |
Volume | 77 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1980 |
Keywords
- Biomechanics
- bite force
- facial height
- masticating muscles
- maxillofacial surgery
ASJC Scopus subject areas
- General Dentistry