question: i went to the denist yesterday because something is going on with my tooth, sometime i feel little pain and the tooth is a little loose. the denist tested the tooth, i did not feel the cold when she tested it, she did more things, did another xray and said that the nerve was dead, and i needed a root canal.  she attempted do the root canal because i wanted to save my tooth, the root canal was unsuccessful because she could not break through, she said it was calcification and i need to see a specialist.  she made an appointment with another doctor, gave me a prisciption for pencillin and 800 motrin.  what is calcification and why couldnt she get to the soft part.  do I really need a root canal,