Conversation: The conversation between human and AI assistant.
[|Human|] Hi Can you help? I have a pain in my top front tooth , I went to a dentist two years ago and he said i need a small filling in this tooth and from then on I have had pain. I have been back five times to him also another two dentists and I am told there is nothing wrong. My mother passed away at the time I had the filling so one dentist said it was stress .
[|AI|]  Hi, if the filling was done without a proper cavity preparation, which could be by two ways-one, if the carious structure was not cleaned up properly, it leads to caries spreading underneath. Secondly if there is pulp exposure while deep cavity preparation, it leads to persistent pain after the filling. Please take a ray and go for a root canal treatment to get rid of the pain.  You may need a crown also if there is discoloration. Take care!