Abstract
Direct pulp capping involves placing therapeutic material on mechanically or traumatically exposed pulp. The most essential requirement of therapeutic success is clinical state of the pulp which should be healthy or in reversible pulpitis. The method is particularly recommended for young permanent teeth due to the high regenerative potential of dental pulp. The mechanisms underlying these repair processes involve the ability of odontoblasts to form dentin bridges via tertiary dentin deposition. If pulp exposure occurs, a layer of odontoblasts is killed and must be replaced with a new odontoblastic population, which differentiates from pulpal stem cells under the influence of a therapeutic agent applied on the pulp. In addition to odontotropic properties and the ability to stimulate production of qualitatively satisfying dentinal bridge, the substance used for pulp capping should be biocompatible, not stain dental tissues, exhibit good adhesion to them, and insolubility in dentin tubule fluid or water. So far an agent which meets all the requirements mentioned above has not been invented. It is crucial to continue research to develop a substance that will yield the best effects in direct pulp capping.
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