This appliance primarily focused on the modulation of neuromuscular activity in order to produce changes in jaw and teeth.
He believed that a treatment outcome is more stable if the functional deviations of muscles are also corrected along with dentition.
Therefore, through his work he developed an approach which allowed the maxillary and mandibular muscles to play an important part in an orthodontic treatment.
The mandibular arch does not have pads in the anterior to allow the soft tissue forces to act on the mandible.
This appliance can be used with headgear in patients with high mandibular plane angle and vertical maxillary excess.