The majority of class III malocclusions are a result of a deficient maxilla due to mouth breathing and a lowered tongue posture. This results in both skeletal and dental class III malocclusions. The Myobrace® Interceptive Class III appliance system is specifically designed to correct Class III malocclusions. Most effective in the early mixed dentition (ages 5-8). The appliance has additional offset to improve dental correction of anterior crossbite.