Human teeth are specialized structures of the oral cavity designed for mechanical processing of ingested material. They are composed of multiple layers, including enamel, which is the hardest substance in the human body, covering the outer surface; dentin, which forms the bulk of the tooth structure; and the pulp, which contains nerves and blood vessels. Functionally, teeth aid in mastication, the process of chewing, which breaks down food into a form suitable for digestion. The physical structure and wear patterns of the dentition are influenced by diet, bite force, and biological processes, requiring regular maintenance to ensure optimal oral health and function.