EX240 E Arch Expander

Appliance Purpose / Function:
The E Arch expander is used to widen the lower arch using a trombone mechanical arrangement in the anterior pre activated with a coil spring.

Appliance Components:

• Bands on the 1st permanent molars
• arch formed of .036 wire and .040 tubing

Suggested Materials:

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

Options:

• Laser welding (no solder)

Appliance Fabrication Standards:

• .036 steel wire from right molar band to the mesial of the right cuspid bent straight across toward the opposite cuspid
• .040 steel tube from the left molar band to the mesial of the left cuspid, bent straight across toward the right cuspid
• Cut the .040 tube at the mid point of the right lateral
• Insert the wire into the tube
• Wire should rest on the soft tissue
• Approximately 4mm of wire and tube should lay on the band for soldering or welding

All information is from www.leolabusa.com