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Dentin

Dentin is the middle layer of a tooth. It is made of hard minerals and protects the pulp (the inner core of the tooth) from external conditions such as heat and cold.

Dentin is covered by enamel above the gum line (the crown of the tooth). Dentin in the root of the tooth is covered by hard connective tissue called cementum.

By Healthwise Staff
Primary Medical Reviewer Kathleen Romito, MD - Family Medicine
Specialist Medical Reviewer Steven K. Patterson, BS, DDS, MPH - Dentistry
Last Revised June 14, 2011

WebMD Medical Reference from Healthwise

Last Updated: June 14, 2011
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.