Cavities are a major cause of pain for lots of people. They are caused from bacterium within the mouth which thrives on foods that are full of starch and sugar which attach themselves to your gums and teeth. The bacterium manufactures acids that injure your tooth, and once the injury gets to your nerve, pain sets in.
However there may be different reasons which cause you toothache, for example, a loose filling, a tooth which is cracked, a gum infection like an abscess, or sinus issues which apply pressure to your teeth. Whatever the cause, …