Snap-On Smile is a full arch of straight, white teeth similar in structure to a night retainer that snap on over existing teeth. Snap-On Smile is made with hi-tech dental resin which makes it highly durable and stain-resistant. Custom made to fit snugly over the teeth, Snap-On Smile can hide gaps, chips, discoloration, and small, worn, or missing teeth. Like a retainer, Snap-On Smile can be removed to clean, but can be worn while you eat and drink.