Biting on aligners with chewies help them fully seat, especially when moving to a new set of aligners. How does this work?
1. The chewing squeezes the areas of problematic fit into creating adaptation with the teeth, and makes the aligner wrap better around teeth.
2. Chewing stimulates blood flow around the teeth and roots which helps move teeth better.
3. Chewing gets rid of air space, to help seat aligners better.