The new Tandem™ appliance is ideal for Class III skeletal patients in mixed dentition who have retrognathic maxillas and normal mandibles.
The upper part is fixed and consists of a Maxillary Banded Hyrax Appliance with two hooks for Class III elastics mesial to the first primary molars.
The lower portion is similar to a removable splint with a lower bow which inserts into a Buccal tube in the acrylic in the area of the first permanent molars.
The lower bow has hooks for the Class II elastics. Correction of a Class III malocclusion in mixed dentition can minimize the possibility of orthognathic surgery.