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.
Chewies are prescribed only when the aligners are not tracking well. You should use them as directed to help the aligners fit properly, Chewies™ Aligner Tray Seater are a simple solution for properly seating aligners with an imperfect fit. Cleaner and more professional alternative to cotton rolls.