3 Things You Need to Know to Spot a Dead Tooth
Your teeth have several layers, and the central layer is known as the nerve or 'pulp'. This is the part of the tooth that is fed by blood vessels. In a sense, you can think of it as the heart of each tooth; if the heart is no longer receiving a healthy flow of blood, it isn't able to survive, and then the rest of the tooth 'dies' too. A dead tooth, sometimes referred to medically as a 'non-vital tooth', is a tooth whose nerve has died completely.