EX230 W Arch Expander

Appliance Purpose / Function:
The W Arch,or Porter expander is used to expand the posterior segments of the arch, correct bilataral or unilataral cross bites, and help align crowded teeth.

Appliance Components:

• Bands on the 1st permanent molars
• W Arch wire

Suggested Materials:

• .036 Chromium Cobalt wire
• Silver Solder (Cadmium Free)

Options:

• Laser welding (no solder)
• Face mask hooks
• Archwire Tubes
• Headgear Tubes

Appliance Fabrication Standards:

• .036 Blue Elgiloy wire
• Wire should rest 1 – 1.5mm off the soft tissue
• Approximately 4mm of wire should lay on the band for soldering or welding
• Lingual bars should extend to the mesial of the cuspids

All information is from www.leolabusa.com