My dentist broke my tooth? sue?

so me and my brother went to a new dentist because my old one didn't do anything blah blah blah in my bottom jaw my left and my right teeth are like in half it hurts when I eat yes I waited after the dentist to eat. nothing happened to my brother and we were treated for the same thing except I had a cavity what should I do?
My dentist broke my tooth? sue?
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