How to ensure consistency of tooth movements

Question:

https://shub.invisalign.com/cc-cloud/latest/index.html?locale=en_US&user=user&ccModIntegrity=false&configUrl=%2Fconfig%2Fscsl_cc_cloud&ccId=451064

I also have a question about cases where we aim to get movement with minimum IPR - when the clincheck does not suggest any IPR, how do I ensure that it is realistic?

Answers by the Group:

@Clearly Kelley’s insights:

If your worried about friction zoom in and see if you see space btw the teeth - if not ask - more expansion if it’s possible, or proclinationOr during delivery of a case with no IPR- floss
If you have contact / friction add a light IPR strip - unplanned IPR
Teeth that are touching don’t move as well
In addition to friction
Always watch the proclination of the max anteriors aren’t too flat
And OJ is ideally more than 2mm
That’s most problems prevented

Answer by Dr. Schalk:

Loom Open

In orthodontic treatment, managing crowded teeth and minimizing friction is crucial for effective tooth movement. One approach is to use a light Interproximal Reduction (IPR) strip to floss between contacts, reducing friction. Another strategy involves instructing technicians to set zero collision tolerance, ensuring teeth do not collide as they move past each other.


For teeth that are significantly blocked out, such as an upper lateral incisor, creating space around the tooth can facilitate movement, provided the patient remains compliant. However, this should not be done excessively, as it may negatively impact gingival health. Lower incisors typically can be corrected without significant issues. Adding attachments can help manage root tip concerns, ensuring consistent movement.


Overall, requesting zero collision tolerance for central and lateral incisors can be effective, though it may not be necessary in all cases. This approach ensures that teeth move smoothly without unnecessary friction, promoting successful orthodontic outcomes.

To add to that, don't view IPR as a necessary for movements to occur...What you need is

  1. Force

  2. Space

  3. Time

3:19

If you have all of those then you are set!