I was referred to Dr Barrett for root canals following filling removal (exchanged the silver filling for white - don't let anyone talk you into doing this as I was!). Apparently I reacted to the Epinephrine in the local anesthesia or he sent it to my blood stream by injecting it incorrectly... and he gave me allot of it. I was shaking, vomiting and etc. He told me it was my nerves and ordered me to calm down. I could not make the shaking stop and felt like I was having seizures. He started drilling anyway. When I couldn't "calm" down he told me we couldn't finish the procedure, packed the tooth which he drilled exposing the nerve and was prepared to send me out. When I asked for painkillers, now he accused me of coming in for the procedure to GET painkillers! Do people actually do that? Whether or not they do doesn''t matter. I was appalled at his abusive behavior. Even his office girls looked embarrassed for him. Needless to say, I found someone else to finish the tooth.