I have pain on tooth # 20, They put a bridge on me know I have pain on 15 I don't know why. They think it might be cracked. The e-ray is normal. I have been to a Endodontist tested me with ice says I act normal. Thinks it might cracked he does not no for sure, and 13-15 have a bridge and I cant cement it on intil I am sure? How would you know for sure. I did not have pain before they did the bridge.