sorry for the inconvenience.my husband having a black pimple in the inside of the mouth.the taste is not there.two weeks back he take the root canal.please tell me doctor what is happening

A. See maybe it is after root canal so it could be associated with some nerves in the mouth of your husband so it’s best to check with your dentist on that they are going to give you proper help because this which is difficult to say what would be the problem with your husband