The “W” arch or Porter arch uses a 0.36-inch stainless steel wire for expansion. The wire is soldered to bands on the upper first molars.

The appliance can be constructed as a fixed removable that slides into sheaths on the upper first molar bands. Unilateral expansion can be achieved with proper activation.



Available in 3D Printing?

  • Yes

Arch Options

  • Upper Arch

Anchorage Types

  • Bands
  • ROCS
  • Crowns

Screw Options

  • N/A