<prompt> Human: I had a large filling in one tooth that has been there a decade. My last dentist said I didnt need a crown. I went to a new dentist after changing jobsinsurance. The new dentist said I need a bunch of new little fillings, and, due to a small amount of new decay under the large filling, I would need a crown. I had a suspicion that she was recommending the maximum number of procedures e.g. they were also trying to upsell me on a 400 mouth guard, but I deferred to her expertise. My dental insurance was supposed to pay half. I paid my half, and the procedure was done. Then my insurance says it was medically unnecessary, and could have just been a new filling. My dentist appealed, but insurance company maintained it was medically unnecessary. My dentist is now threatening to put it to collections by the end of the month unless I pay the balance. What are my options?Edit: I talked with my insurance at one point and they said they reviewed the x-rays and thought it was medically unnecessary.  <response>: Tell the dentist you are going to file a complaint with the state dental licensing board for an unnecessary procedure. This might motivate her to negotiate on the outstanding balance. If she sends it to collections, shell only receive a small percentage of whats collected. 