The dental nerve is also known as the pulp. The pulp is the only soft tissue in the dental tissues, i.e., loose connective tissue, and is located in a pulp cavity surrounded by dentin and connected to the periapical tissues only by a narrow apical foramen. The shape of the pulp cavity is roughly similar to that of the tooth, with a larger cavity called the pulp chamber in the crown and a smaller cavity called the root canal in the apical portion of the tooth. The apical portion of the root has small holes, commonly known as root canal holes. The tissues of the pulp consist mainly of nerves, blood vessels, lymph nodes and connective tissue. The pulp itself is characterized by the following: i. It is surrounded by contaminated dentin. ii.The matrix is rich in fibers and sticky. Third, there is no effective collateral blood circulation. All these features make the pulp susceptible to pain and difficult to recover from any injury to the pulp.