So I had two root canals like months ago, both have crowns, but whenever I eat an excessive amount of chocolate on my right side it hurts. it’s not nerve pain, but it hurts. and sometimes it’ll randomly hurt. but on the left side, the other is just fine. I'm afraid they missed a couple nerves, but they checked the x-rays and everything fine. even when they shaved down my tooth to fit the crown I was fine. I was thinking maybe it’s the gum? or the tooth behind? but I'm not sure.