Apparatus for use in the correction of maxillary and premaxillary conditions in infants

摘要

An arch alignment appliance for use in the correction of the maxillary and premaxillary deformity in infants with bilateral cleft lip and palate is achieved through the application of an intra-oral maxillary expansion and premaxillary retraction device capable of extra-oral operation. A screw mechanism is provided for expansion of the maxillary segments and for retraction of the premaxillary segments. Mucosal tissue damage is avoided.