My Doctor Cut the Back Part of my Invisalign, Is that Normal?

I had invisalign placed today for my second set of trays. At first, the tech and I were having problem putting on the bottom tray. She called the dentist and he tried to put them on me. He could not put them on. What he did was cut the molar part of it on both sides. It only left the front part of the invisalign. Is it okay to do that? How is it going to help in shifting my whole bottom teeth? Aren't they suppossed to fit if they made for my teeth?

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3 Doctor Answers | Asked by yhlou

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The dentist altered my invisalign tray?

Due to distortion in the impression material we sometimes have to alter the invisalign trays to fit around back molars. Most of the time the back teeth are not moving during the invisalign treatments so it ususally doesn't matter when the back of the trays is cut. However the dentist neeeds to monitor those teeth closely

Altering Invisalign Trays/Aligners

Sometimes the Invisalign trays/ ALIGNERS have to be altered to fit properly or comfortably. The most common reason is distortion of the impression or incomplete impression which many times is communicated to the doctor during the planning phase of treatment or the CLIN CHECK. Removing or trimming the posterior molar part of the aligner to facilitate fitting or comfort may not affect the success of treatment, however close monitoring of the progress of treatment is necessary to detect any... more

Is it ok to cut off part of an invisalign tray?

Most of the time the back teeth are not moving too much during Inivisalign treatment so it usually doesn't matter if the end of the aligner is cut off. What probably happened is that the initial impression was distorted in this area which means that none of the rest of the aligners will fit any better. You just have to be careful because sometimes thing can go wrong if the entier arch is not covered and this needs to be monitored closly