WILLIAMS EXPANDER
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.
- Appliance Components
Description
- 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