QUESTION: Can my dentist bill me one year later after the final service as revenge for my complaint to an insurance company and Dental Board? I took a root canal treatment from my last dentist S one year ago. But several months later, my inflammation came back and even worse. My new dentist Z told me that my inflammation is all caused by the incorrect root canal treatment which was done by S. But S denied that. After that, I got a dental surgery for my tooth from a specialist..