WILLIAMS EXPANDER

  • Arrow on screw points towards the throat.
  • Screw centered at skeletal midline, 1mm from anteriors.
  • Screw body angled for easy keyhole access.
  • Screw arms soldered to tubing at positions 4/5.
  • Tubing follows arch form from 6s to mesial of 4(d).
  • Thin Ni-Ti wire cut to fit tubing, allowing expansion.

Suggested Materials:

  • Blank Band- LL6/LR6
  • 8mm Half Screw
  • .018 NiTi Support Wire
  • .031 Tube Extensions
  • Solder
  • Expander Key