The Williams Expander specializes in lower arch expansion. Laser-welded tubes on the lingual bars house a Ni-Ti wire, aiding in anterior rounding during expansion. Incorporating occlusal rests is advised. Each expander comes with a custom swivel key, featuring an integrated activation tracker on the handle.
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  • 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