In-vivo bone strain as an indicator of masticatory bite force in Macaca fascicularis

Arch Oral Biol. 1986;31(3):149-57. doi: 10.1016/0003-9969(86)90120-2.


The hypothesis that mandibular bone-strain patterns are a good indicator of molar bite-force patterns in M. fascicularis during mastication was tested by determining the relationship between mandibular bone-strain patterns and bite-force patterns during isometric biting. Bone-strain patterns were determined using rosette strain gauges bonded to mandibular cortical bone below the roots of the M2 during isometric binding on a transducer along the M1-M2 region. The effects of rosette position on bone-strain patterns during mastication was determined by comparing bone-strain patterns recorded from two different rosettes; one bonded below the roots of the M2 and the other below the roots of the M3. The data from the two experimental sets support the hypothesis that bone-strain patterns along the working side of the mandible are a good indicator of bite-force patterns during the power stroke. The relationship between bone-strain patterns and bite-force patterns was not perfect and the two principal strains were not of equal value. In general, principal compression was a better indicator of bite force than principal tension.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Biomechanical Phenomena
  • Bite Force*
  • Dental Occlusion*
  • Female
  • Isometric Contraction
  • Macaca fascicularis
  • Male
  • Mandible / physiology*
  • Mastication*
  • Time Factors