How big of a gap is still considered “good fit”?

[33333]

If there is a gap between the biting edge of the teeth and the tray by the end of the 2nd week, how big of the gap is still considered a “good fit”?

I noticed there were gaps about 0.5mm which I don’t recall existed previously.

Thanks

[whiteswan]

I think that if the attachment is still engaged then it is ok. If the attachment is off, call your ortho. He will probably choose to move the attachment and continue on from there. You may still have the gap. That is my experience anyway.