~ getting to the root of the problem ~
Teeth are a living part of your body and can get sick or even die. When the nerve inside a tooth is irreparably damaged it can either die and decompose quietly or flare up and create a really bad toothache on its way out. This will happen after irritation from either deep decay or cracks, fractures, or other trauma take their toll.
As long as the hard tooth structure around the nerve is sturdy enough, the diseased nerve inside the tooth can be removed - referred to as a root canal procedure - and the tooth built back up, often with a crown, but sometimes with filling material only. Root canal treatment has come a long way from what you may have heard in the past - today's conservative treatment approaches can get you back on your feet in no time.