Answer:
The white outside portion of a tooth is called the enamel. Inside the enamel is another hard layer, the dentin. There's a small chamber at the center of the dentin called the pulp chamber. Inside the pulp chamber is the tooth pulp, a soft tissue made up of nerves, arteries, and veins. The pulp extends from the pulp chamber all the way to the tip of the root, through a narrow channel called the root canal. When the nerve of a tooth becomes infected, root canal treatment can save the tooth. Germs causes infection in root canal and that builds up pus at the root tip. This can create a hole in the bone.
An infected tooth will never heal on its own, it only gets worse, and it will continue to be a source of infection that weakens your immune system. This can affect your entire body. This damage to the bone and the swelling inside the bone can also be excruciatingly painful, and even life-threatening. Years ago, an infected tooth would have to be extracted, but today, we can save your tooth with root canal treatment.
In Root Canal treatment:
First dentist removes the infection.
Next he places a post to strengthen the tooth
Finally he crowns the tooth to protect it.
