Transverse Appliance

The transverse appliance is used to widen the upper and lower arch to correct bilateral cross bites and anterior crowding. It is recommended to have maximum clasping because of the forces generated from the screw. As with any expansion appliance, we recommend maximum retention with Adams clasps on the 6’s (if erupted) and ball clasps between the pre-molars. You can also incorporate a labial bow to control the anterior incisors and a posterior bite plate to disarticulate the arches providing additional anchorage for the upper appliance