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 never on the inside of the tooth may be dying or 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 is known as a root canal. Root canals…