Serving your Orthodontic needs since 1990.

SM210 Transpalatal

Appliance Purpose / Function:
The Transpalalatal Arch is an excellent choice to maintain space aquired after expansion or distalization. It may be designed as a straight wire crossing the palate between the molars or with an omega loop (coffin spring) which will allow adjustment and can provide some molar rotation.

Appliance Components:

  • Bands on left and right side of the arch
  • .036 wire 1mm-2mm off of the palate

Suggested Materials:

  • Wire: Chromium Cobalt wire
  • Solder: Silver Solder (Cadmium Free)


  • Laser welded (removes the solder)

Appliance Fabrication Standards:

  • The transpalatal wire is a uniform1 to 1.5mm from the tissue across the palate.
  • The coffin spring of the transpalatal arch is bent with the opening in the coffin spring facing mesial unless otherwise requested
Fabrication Notes:
If the appliance is fabricated with the opening in the coffin spring facing distal, pressure applied on the wire by the tongue will tip the molars forward.

All information is from