I've had fillings before, which I've always found to be weird because I take meticulous care of my teeth. I brush and floss twice a day and have a healthy diet. But I needed 4 cavities filled, and my dentist did them all in one day. They were all the very back teeth on the top right, bottom right, top left and bottom left. The two top ones were in between the very back teeth and the second to back teeth (my wisdom teeth have been out for 10 years now). Anyway, I started experiencing EXTREME pain in tooth #15 whenever I bit down, and on the opposite side of my mouth it's been uncomfortable to chew. I'm literally living off of soup. It's been 5 days, so I went into the dentist and she adjusted my bite on the not-too-painful side. It didn't help. She also told me after about 2 seconds that my tooth #15 "must" be fractured, and she pushed me to get a crown the very next day. I'm not saying it's not, but she literally made that call after about 5 seconds. Every morning when I wake up, my jaw hurts really bad, and I can't get ibuprofen fast enough. I try not to jump to conclusions, but I don't know if it's just because I got about 4 shots in each tooth and my mouth stayed open for almost 2 hours. I also experienced my first migraine, and i thought I was going to die. I'm going in for a second opinion in a few days. I'm still curious, though, what this might be. The pain comes and goes, but it doesn't hurt unless I'm trying to chew, then it's my undoing. Thank you so much!