Braces in Los Angeles

Orthodontists in Los Angeles California

Does anyone know if you need more schooling to be a dental hygienist for an orthodontic doctor? Do they get paid better in orthodontics than they do in normal dentistry?

I would be applying at the University of Michigan (my alma mater). I have 8 years of experience in orthodontics, but have been out of the dentistry field for 20 years.
Thanks!

Like the people who actually put on your braces and other stuff, would they be assistants or hygienists.