How long do i have to have retainers?!

How long do i have to have retainers?

I've got fixed braces for 3 years can you tell me how long i will have to wears retainers for after roughly.
Thanx

You want to wear them forever!! Continuing use of the retainers will guarantee that your teeth won't move. If you have a bite plate retainer (usually pink with metal loops) then they will also protect your teeth if you ever grind your teeth. You should wear the retainers every night and then eventually you can wear them a few nights a week to make sure they still fit. I would wear them every night for about 2 years. If you are very stressed you can wear them more often because they help save your teeth!