My husband went in for some fillings. The dentist accidentally dug too deep and then stopped, asked my husband if he wanted a root canal. She said she didn't know how she got the nerve exposed because there was such a large gap between the cavity and the nerve. She said that the root canal is not covered by our insurance AFTER she exposed the nerve. When I got mad about it, she got really worried and basically had the front desk receptionist tell us that she didn't feel comfortable doing any more dental work on my husband. Is there something I can do legally? He's in excruciating pain after the anesthetic has worn off and we don't have nearly anything to cover a root canal. They never said they might drill too far, no warning was ever given - it was supposed to just be a simple filling. It's also a tooth that is used often for chewing, tooth #5.