A three dimensional clinical approach for anterior crossbite treatment in early mixed dentition using an Ultrablock appliance: case report.

An 8-year-old girl patient presented to Pediatric Dentistry Department at Tufts University School of Dental Medicine for orthodontic consultation. The patient was in early mixed dentition with anterior crossbite and underdeveloped posterior occlusal vertical. Anterior crossbite correction and proper posterior occlusal vertical were established in 6 months of treatment by using an Ultrablock appliance (a removable Ultrablock appliance followed by fixed Ultrablock appliance) which was designed in three dimensions (horizontal, vertical and transverse) on Denar Witzig articulator. An increase of 5 mm in the posterior occlusal vertical is reported.