Tooth Movements. Teeth can de-rotate, extrude, intrude, procline, torque, bodily move, etc at a rate of 0.2 mm of linear movement or 2 degrees per aligner approximately 2 weeks at a time. 

The predictability to achieve the desired outcome will depend on how well each tooth responds to the forces programmed within each aligner. Some movements will be more predictable than others. Any movement that involves the apex moving through the bone will be more complex and therefore more unpredictable.

COMPLEX movements:

  • Protraction
  • Retraction (bodily movements)
  • Palatal Root Torque
  • Mesio-distal Root Torque

If you see unpredictable movements noted for your case, please advise your patients. Managing patient expectations is an important component in ensuring that patients have a positive ortho experience at your office