Since the bite in 2018, there was always some doubt about whether 2 or 1 molar was cracked. After the 1st crown went in & it didn't eliminate all the pain, there was always some doubt about whether the root canal was bad or the 2nd molar was cracked. Signs of it being the 2nd molar slowly grew over the years. There was a slowly growing, intermittent pain from that tooth. It wasn't the usual crack, but a crack in 1 corner right next to crown 1. Only after temporary crown 2 went in was it clearly the 2nd molar. That ended most of the pain, but there was still a crack in the dentin in the trouble spot. They didn't do a root canal for molar 2 & having a temporary crown without a root canal is a rough experience. Temperature sensitivity, pressure sensitivity abound. It seems to be just held on by gravity & pops off while rinsing. Root canals are the worst experiences, but definitely have their benefits. The permanent cro...