Dentin
Paulette Spencer,
Yong Wang,
J. Lawrence Katz,
Paulette Spencer
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorYong Wang
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorJ. Lawrence Katz
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorPaulette Spencer,
Yong Wang,
J. Lawrence Katz,
Paulette Spencer
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorYong Wang
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorJ. Lawrence Katz
University of Missouri-Kansas City, Department of Oral Biology and Pediatric Dentistry, Kansas City, Missouri
Search for more papers by this authorAbstract
Dentin is the hydrated composite structure that constitutes the body of each tooth, providing both a protective covering for the pulp and serving as a support for the overlying enamel. Enamel, with its exceptionally high mineral content, is a very brittle tissue. Without the support of the more resilient dentin structure, enamel is so brittle that it would fracture when exposed to the forces of mastication. Dentin supports as well as compensates for the brittle nature of the enamel.
In contrast to enamel, dentin is a vital tissue containing the cell processes of odontoblasts and neurons. As the odontoblasts can be stimulated to deposit more dentin, this tissue is capable of limited repair. The structure-property relationships of dentin vary with location, physiological, aging, and disease processes. This chapter will review the composition, structure, and properties of the various types of dentin and their effect on current restorative dentistry procedures.
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