Photo by @TatianaMara on www.twenty20.com Sometimes, when you have a toothache, the cause is due to the tooth being severely decayed. If the toothache is causing you severe pain, the nerve inside of the tooth may be dying or be already dead. If this is the case, you’ll need to either have the tooth extracted or the nerve removed from the tooth, in order to remove the abscess. Removing the nerve will save the tooth, and it is known as…