page_title: Tooth enamel
section_title: Dental procedures
hierarchical_section_title: Tooth enamel / Dental procedures
context_page_description: Tooth enamel is one of the four major tissues that make up the tooth in humans and many other animals, including some species of fish. It makes up the normally visible part of the tooth, covering the crown. The other major tissues are dentin, cementum, and dental pulp. It is a very hard, white to off-white, highly mineralised substance that acts as a barrier to protect the tooth but can become susceptible to degradation, especially by acids from food and drink. In rare circumstances enamel fails to form, leaving the underlying dentin exposed on the surface.
caption: An X-ray showing enamel and dentin replaced by an amalgam restoration
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