The effects of bolus hardness on masticatory kinematics.

  title={The effects of bolus hardness on masticatory kinematics.},
  author={Karen O. Anderson and Gaylord S Throckmorton and Peter H. Buschang and Haruaki Hayasaki},
  journal={Journal of oral rehabilitation},
  volume={29 7},
This study investigated how jaw kinematics, including cycle duration, three-dimensional (3-D) excursive ranges and velocities, and cycle shape, changed with increasing hardness of chewing gum. Twenty-six subjects (13 males and 13 females; mean age 23.6 +/- 2.5 years) with Class I normal occlusion were asked to chew two brands of gum with differing hardness. Jaw motion during chewing was tracked with an Optotrak camera at 100 Hz, and all movements were recorded as pure 3-D mandibular movements… CONTINUE READING
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