How long must I wear braces? (Photo)

I was resently in Poland and fixed my teeth, got one implant and got some work done. My dentist told me that I have to get braces because the teeth have "moved" too much. I wont be able to get implants before my teeth are "close" again. Since I am a student I will not have money before the summer 2017, so I am afraid that they will have moved a lot more by then. So, how long must I wear braces to get an implant up in the front? I have not smiled in years because I am missing that tooth.

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