Dr. Bertagna put a crown on my tooth.
Months later the tooth kept hurting. He simply told me I was sensitive to hot and cold from the metal in the porcelan crown he explained. I was in so much pain I was disey. I went to my old dentist and he said I needed immediate root canal. He showed me how the tooth was erupting from the puss under it.
He drilled a hole in the tooth to let the puss out. Had I waited a day longer I would have lost my tooth, or worse developed a blood infection. Stay away from Dr. Bertagna. Your health is most important. My old dentis was in the process of retiring and is now retired. His name was Dr. Barnett. The nicest dentist ever.