The majority of a tooth is compromised of what tissue?

Dentin is the correct answer because it constitutes the primary structure of the tooth, making up the largest volume of the tooth's material. It is located beneath the enamel and cementum and surrounds the pulp chamber. Dentin is a hard, yellowish tissue that supports the enamel and protects the internal pulp.

Enamel, while being the hardest tissue and providing a protective outer layer for the tooth, is much thinner than dentin and does not make up the majority of the tooth's structure. Cementum, which covers the root of the tooth and helps anchor it to the periodontal ligament, is also significantly less voluminous than dentin. Pulp, the soft tissue containing nerves and blood vessels, is found at the center of the tooth, but it does not contribute to the mass of the tooth itself in the way that dentin does.

This understanding underscores the significance of dentin in both dental anatomy and health, demonstrating its role in the overall integrity and function of teeth.