A sensitive tooth or a toothache can indicate a lot of dental issues. You could be dealing with a severe tooth infection requiring a root canal or tooth extraction, or you could have a dental abscess. An abscessed tooth may cause pimple-like swelling between your gums and teeth. In some cases, sensitivity may be caused by advanced gum disease or recession. We won’t know the exact cause of your tooth pain or sensitivity until we’re able to examine your mouth, sometimes using digital x-rays.