###Human: What can be done for severe pain in a permanently filled tooth? ###Assistant: Hello. You need a professional assistance as soon as possible. There may be two possibilities. The first one is carries present in deep part of tooth and create problem, in this condition you need root canal treatment. The second one may be the height of filled material is excess and it needs some trimming to maintain balanced height of the tooth. So, I suggest you to please see your dentist for a clinical examination.