HAAS Expander

The HAAS appliance incorporates an acrylic plate within the vault of the palate with an expansion screw. Lingual arms are laser welded to the bands integrated into the acrylic. Dr. Haas believed that more palatal coverage reduced tipping and supplied more bodily movement because of the additional coverage on the palate. With each expansion appliance, we provide a custom swivel key that has an integrated activation recording tool directly on the handle.