What a funny name!

This is a fixed brace that goes on the two back molars, with a wire connecting them over the palate.

What is it used for? To expand the tooth arch, usually the upper, to correct a cross bite (i.e. upper teeth on the inside of the lower teeth.) This is one of the few ways to expand the dental arch, quickly and under control.

What does this mean for me? 4 appointments.
 
1. To place tooth separating elastics
2. 1 day later, choosing these bands for the back teeth, and taking an impression
3. 1 week later, place the tooth separating elastics
4. 1 day later fit the quad helix onto the teeth with dental cement.

How long does it take? 3 - 9 months, with review appointments every 4 weeks.

How often do I wear it? All the time, it's fixed!