Do Invisalign Trays Get Tighter?

It's pretty common for a new set of Invisalign trays to feel very tight. In some cases, it may even seem like they can't fit over your teeth. If you've just switched to a new set of trays and they're not fitting onto your teeth, you can use Invisalign “Chewies” to seat them properly.

Do Invisalign trays get loose?

Your aligners shouldn't feel very loose. When you first put them in they should be pretty tight, but then within 3-4 days, they should feel looser, but snug.

Why does my Invisalign feel loose in the back?

Another common problem with aligners fitting improperly is on the back teeth. If you feel a gap in the back of your teeth, remove the aligner, and bend it and squeeze it with your fingers to close the opening tighter, so it fits more snugly over your teeth.