Green OPA (firm) Designed for people that clench and grind at night.

The OPA is an All-In-One patented oral device. It is an all-in-one removable, adaptable, nighttime appliance. The OPA helps eliminates maladaptive myofunctional habits that may result in dental relapse, root resorption, tooth damage, oral abrasion, and gum recession. It also encourages nasal breathing and trains the tongue to rest on the roof of the mouth.