Use Aligner Chewies to help close any air gaps between your teeth and your aligners (clear retainers).
An Aligner Chewie is a small cylinder made of a soft spongy plastic-like material called Styrene Copolymer. It looks like a small roll of gauze or cotton.
Biting on the Chewie helps your trays to fit tighter on your teeth, which helps your treatment progress faster.
Aligner Chewies are reusable — to a point. You can wash them with a mild soap and re-use them several times before they will lose their elasticity.