For how long do i need to wear my retainers?

I've heard some people say that you have to wear them for the rest of your life... is that true? I got my braces when i was 13 and wore them for 1 year and like 7 months and i wore my retainer for 1 year day and night then the next year i started to use it only at night, and i have like a solid little wire on... show more I've heard some people say that you have to wear them for the rest of your life... is that true? I got my braces when i was 13 and wore them for 1 year and like 7 months and i wore my retainer for 1 year day and night then the next year i started to use it only at night, and i have like a solid little wire on the bottom teeth, like on the front 6 teeth. So I'm wondering if I'm going to need to keep wearing them forever?
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