I had root canal treatment 8 years back, since then i changed 2 porcelain crowns due to crown breakage but never had pain in porcelain crowns. About 7 months back I switched from Porcelain to copper crown. Every thing was fine since then except a little adjustment problem but now for 2 days I have a severe pressure pain and cant eat anything from that side,
Thanks for your query, I have gone through your query. The pain could be because of the high points over the crown that results in abnormal force over the tooth resulting in pain. The other possible cause could be because of the gum infection. Consult an endodontist or prosthodontist and get the tooth checked, if the high points are there then get it corrected or relieved. If gum infection is there then get the teeth cleaned along with a course of antibiotics. I hope my answer will help you, take care.