EX210 Quad Helix Expander
Appliance Purpose / Function:
The Quad Helix 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
- Quad helix
Suggested Materials:
- .036 Blue Elgiloy wire (heat treated)
- Silver Solder (Cadmium Free)
Options:
- Laser welding (no solder)
- Face mask hooks
- Habit crib
- Archwire Tubes
- Headgear Tubes
Appliance Fabrication Standards:
- .036 Blue Elgiloy wire
- Width between the anterior helicals should accomodate a 3 prong plier
- The body of the RPE is as high in the palatal vault as possible without touching the tissue
- Half of the width of the distal helicals should extend beyond the molar band
- Approximately 4mm of wire should lay on the band for
soldering or welding - Lingual bars should extend to the mesial of the cuspids
Appliance Notes:
- Orthopli 0640A pliers are designed specifically to make intra oral adjustments on the Quad Helix appliance.
All information is from www.leolabusa.com