Only the ortho knows for sure!
There are pluses and minuses on both types
Removable: There is a type with a bar in front of your teeth, you choose a colour for this type and there is a type that is clear and surrounds the teeth (no colour choice)
Samantha - Most orthos don't use permanent ones for the top teeth.
Also another thing to do is observe other patients who are having follow up visits (retainers), if you see some at your adjustments. Don't hesitate to ask though.
Yes, that is horrible, 3 years wasted!
- mariah