A new material and technique for appliance therapy

A new material (thermoplastic) and clinical technique has been presented which can be utilized for appliance therapy. The major occlusal problems caused by distortion of acrylic appliances after traditional heat curing has been eliminated by this material. As a result, a clinical technique has been suggested that utilizes a relieved duplicate master cast that is mounted on the articulator for wax up and processing purposes. The inordinate accuracy of the material permits the finished appliance to be reseated on the master cast with great precision. The occlusion is refined and the appliance inserted with insignificant occlusal adjustment.