Well this is just lovely. I called and asked the woman in the billing dept why it was going to be so much $$ if I were to use the nitrous. Told her that everyone I spoke with including my HMO, a dentist friend from another state and a local dental hygienist (who doesn't take my ins) all cannot understand why their office charges hundreds more than anyone else. her response? "I think you should find a new dentist it's obvious you don't trust your dentist here, even over some person over the phone at an insurance company when they aren't a dentist."
so now to beg my HMO to allow me to get a second dental exam within one calendar year so that I can get my work done at another office.