Is it normal for braces to cause your teeth to flare? (Photo)

I just got my Damon braces removed yesterday and are having concerns with the results! I wore them for 18 months and now my top and bottom teeth flare out towards my lips. They were over crowded before but never flared. I also have a bottom front tooth that is forward and am concerned that it will continue to move forward. It is not glued to my bottom retainer. Am I over reacting?

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