This is an orthodontic appliance I desinged. it is a fixed mandibular expander and in my opinion a significant improvement over the traditional mandibular fixed expander.
Mandibular constricition is different from maxillary constriction because in the maxilla it is due to the bone, but in the mandible it is primarily due to the inward tilt of the teeth. My appliance gives these teeth the mecanical advantage to upright as well as to expand. Therefore, the expansion process proceeds much faster and the the teeth are in a much better functional position upon completion than with the traditioanl expander.
