If you’ve undergone orthodontic treatment in the past, you may have been provided with a retainer once your braces or aligners came off. But while many people are prescribed these devices, sometimes they don’t wear them quite as often as they should. A night off here and there can quickly lead to weeks and months of no use, and eventually your teeth may begin to shift, and your retainers may stop fitting or become uncomfortable.

So, what happens if they do? Can you use your retainer again to bring your teeth back into alignment? Here’s what you need to know about wearing these orthotics, and what you should do if your teeth have shifted again.

Whether you’re not a regular flosser, or you simply aren’t sure how to floss properly with your clear aligners, adding this step to your oral hygiene routine is essential during Invisalign treatment. That’s because despite your removable trays allowing you unprecedented freedom while you straighten your smile, keeping your teeth and gums clean when you wear aligners is of the utmost importance.

Here’s why (and how) you should floss your teeth during your Invisalign treatment!