What is a tooth composed of?

A tooth is primarily composed of four main tissues: enamel, dentin, pulp, and cementum. Enamel, the hard outer layer, protects the tooth and is the hardest substance in the human body. Dentin lies beneath the enamel and provides support, while the pulp contains nerves and blood vessels, vital for tooth health. Cementum covers the root and helps anchor the tooth to the jawbone.