If you’ve just switched out an old set of trays for a new one, you may have problems getting your new trays all the way down onto your teeth. This is normal, since the new set of trays will be pretty tight.
Usually, the best way to correct this issue is to use Invisalign “chewies.” These are small rolls of foam that are safe to chew with Invisalign. When you bite down on a chewy, this helps to move your Invisalign trays into the proper position, which may be enough to correct minor tracking issues.
If you’re having significant fit issues with your Invisalign trays, the best thing to do is to call your Invisalign provider and ask about “backtracking” to your previous set of trays. Swapping back to an old set of trays for a short period of time may sometimes help your teeth to move into the proper position for your new trays.
Don’t just do this without asking your dentist, though. If you swap to an old set of aligners without telling your dental provider, you could end up delaying your treatment further.
Most Invisalign tracking issues are caused by inadequate wear. Invisalign is convenient because you can take out your trays whenever you want. But removing them too often can delay your treatment.
Ideally, you should only take out your aligners to eat and drink, and to brush and floss your teeth. You should wear your aligners for at least 20 hours per day, and 22 hours or more is even better.
If you accidentally damage your aligners, this can warp and damage them, and cause them to fit into your mouth improperly. You’ll need to take steps to avoid this. For example, avoid using really hot water when cleaning your aligners, since this could warp the plastic.
Whenever your aligners aren’t in your mouth, put them into their protective carrying case. If you drop, step on, sit on, or otherwise accidentally damage your aligners, this could cause tracking issues and delays in your treatment.