Sometimes when I scratch my side teeth close to the gum with my nail (to removed food or something similar) it sends terrible pains through the nerves of that tooth. It doesnt happen if I use something like floss or touch the lower part of the teeth. Anyone know why that is or have the same thing? Just curious.
what you are probally feeling is your tooth going dead or being fracured I had the same problem 5 months ago and they said that I had a fracured tooth and they did some test and the root was going dead. I would see a dentist as soon as possible because when the root goes dead you will never feel the pain and it will spread to the next tooth and decay it. It really does not mean that your gums are going back because when you hit a pain spot and there is not visible sign of the tooth going bad it is a fracture
I had the same problem and also temperature sensitivity to these teeth and the doctor told me that it was due to corrosion. I've posted a topic about that but nobody answered.
I am going again today to check what's going on. I had these teeth covered with fluorine last week and if it is not working I must have them fixed.