The Transforce appliance is a pre-activated, arch lengthening appliance that fits into horizontal tubes that creates space by advancing the anteriors facially. This appliance is available as either a transverse or sagittal expander. Each appliance contains a pre-activated nickel titanium coil spring enclosed in a tube and generates approximately 200 grams of force. Both Transforce appliances fit into horizontal tubes on the lingual of the bands and require no additional activation after seating. Both appliances are highly accepted by patients due to the increased comfort and streamlined design.

The transverse or sagittal appliance is available in three upper and three lower sizes.