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I have a fairly serious problem. My teeth were filled about 15 years ago, and now I have an issue. I have read about the recent ban on mercury, and I am wondering if there has already been enough damage done to consider my options. Should i get new ones, or at this point, does it not make any sense to, and should I just deal with the ones that I have? Also, the gap between the teeth and the fillings is increasing, what do I do about that?