- Enamel is the hard outer shell. It's tough but can still be damaged by acid from food and bacteria.
- Dentin sits under enamel and has tiny channels to the nerve. When it's exposed, teeth feel sensitive.
- The pulp holds nerves and blood vessels. Deep decay or injury here often needs a root canal.
- Gums wrap around and support each tooth. They should look pink and firm, not red, swollen, or bleeding.
Oral Health
How your teeth are built
Knowing the layers of a tooth makes dental problems easier to understand.
See how this connects to our interactive tooth diagram.