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I had 4 premolar extractions for overbite/overjet. A maxium gap made with extraction is upto 8 mm. But this is just an average number and mine can be slightly different figure.
Anyways.. I'm NOT using screw so font and back teeth are pulled together to close the gap.
My question is, are thebottm teeth pulled in a same way?
Bottom gaps looks little smaller than the top ones,, And because of the nature of the teeth, the bottom needs to tuck under the top one.. therefore it would make sense to me if all bottom teeth are pull back and top teeth meet in the middle. what do you think?
VistaXP wrote:I'm not 100% sure, but I think they use elastics (rubberbands) to correct that.
I know they use power powerchain to move teeth. But I'm wondering if bottom teeth are move only 3mm back, top teeth can move less than 3mm total because how they bite on each other.