Do I need to get braces again? (photo)

Before I got braces, one of my problems was that I pushed my teeth up on the side with my tongue (I think it's too big for my mouth or something). I wore my top retainer every night, but I see that either they got pushed or my bottom tooth got pushed forward. I don't mind the way it looks, but now one of the teeth is touching the top of my bottom tooth all the time and it's a little uncomfortable. Can invisalign or something be used to push back the bottom tooth or do I need braces again?

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