Conversation: The conversation between human and AI assistant.
[|Human|] Hi my filling just came out which has had a whole in for a considerable amount of time... But underneath the filling there was something that stunk rotten and was pink and slightly black I am confused as to what this is. I have previously had root canal treatment on this tooth I am not feeling any pain at the moment
[|AI|]  Hi! Welcome to Chat Doctor. I read your query. As you mentioned the filling came out of the previously RCT treated tooth, the pink and black thing you see in tooth is condensed Gupta purchase filling material, which is filled in root canals during RCT. It is heated and pushed into root canal, so appears black. I suggest you to go to a dentist and get it checked. If the tooth is fine since you don't have any symptom, get it filled and get a crown on it. Hope the answer helps you. Thank you.