Manually Correcting a Class II, and Adding Button Cutouts


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Key Steps:

  1. Assess the Situation:

    • Identify the Bolton discrepancy and determine the need for correction.

    • Check the width of the lateral incisors (<6.4 mm) to confirm the issue.


  2. Modify Plan in 3D Controls:

    • Click on "Modify Plan" and access 3D controls for adjustments.


  3. Placing Button Cutouts or Slits:

    • Preferably place button cutouts on the distal aspect of the tooth to prevent elastic slipping.

    • Attachments should be placed on the tooth to prevent unwanted movement.

    • For lower teeth, place buttons on the first molar. For upper teeth, choose between the canine or first premolar.

    • Consider placing button cutouts on lingual surfaces for crossbite correction if needed.


  4. Ensuring Proper Occlusion:

    • Adjust the position of teeth to achieve even biting between premolars and molars.

    • Use the maintain function to lock teeth and create spacing if necessary for alignment.

    • Ensure a Class I molar and canine occlusion.


  5. Building Up Teeth (if needed):

    • If laterals are smaller, create space around them for build-ups.

    • Discuss options with the patient for aesthetic improvements.


  6. Instructions for Technicians:

    • Request sequential distalization on both sides, moving only two teeth at a time.

    • Start with the second molar, then move the first molar when 50% finished.

    • Progress to the second premolar only after the first and second molars are complete.

    • Move central and lateral incisors as a block unit.

    • Leave space around heavily rotated teeth to prevent friction.


  7. Submission for Modification:

    • Once adjustments are made, submit the plan for modification.




Instructions to Technicians:

Please complete sequential distalization on both sides. Only move two teeth at a time. Begin with the second molar, then when it's 50% finished its movement, start moving the first molar. Only begin moving the second premolar when the second molar is finished moving. Complete this pattern of only moving two teeth at a time for all of the other teeth. The only exception is to move the central and lateral incisors as a block unit.