A dental chewy is a cylindrical soft plastic (Styrene Copolymer) device that helps you to correctly fit the aligners in your mouth. In very few cases, you will have the sensation that your aligner isn’t properly fitted on your teeth. In these cases, you just bite on your chewy for a few seconds, and the aligner will be clipped back into position.Note that due to the superior elasticity of our aligner material, we have nearly no application for dental chewies. Nevertheless, they are still provided in your set of aligners that you receive on your clear aligner treatment day.