Click "Play" button above to view a thumbnail demo animation. Actual BiteFX animations are viewable in full screen mode and can be played in full or advanced and reversed frame by frame.

18. Positioning Muscles: Comparison

  • Split screen animation showing stable/ destructive views of the pterygoids in opening/closing/clenching.

Purposes

  • Allow comparison of the functioning of the positioning muscles in stable and destructive bites.
teethteeth
teeth
teeth

Each animation includes supporting
photos and is equipped with detailed clinical notes

comparison

Presenting

  • Let your client see that the muscles work similarly during the opening and closing motions
  • The main difference comes when the jaw clenches. In a stable bite, with the jaw fully seated, the positioning muscles are relaxed. In the destructive bite, with the jaw not fully seated, the positioning muscles contract to hold the condyle on the slope of the eminence. The normal coordinated and independent function of upper and lower pterygoids is lost and muscle hyperactivity results.
  • Point out that the disc in the destructive bite has altered shape and position.