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. 2004 Jun;97(6):749-55.
doi: 10.1016/j.tripleo.2003.10.029.

Octacalcium phosphate-based cement as a pulp-capping agent in rats

Mariko Sena  1 , Yasuo Yamashita, Yumiko Nakano, Masataka Ohgaki, Satoshi Nakamura, Kimihiro Yamashita, Yuzo Takagi
Affiliations

Octacalcium phosphate-based cement as a pulp-capping agent in rats

Mariko Sena et al. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2004 Jun.

Abstract

Objective: The purpose of this study was to evaluate the pulpal response to an octacalcium phosphate (OCP)-based cement used as a pulp-capping material.

Study design: The pulps of 60 maxillary first molars of male Sprague-Dawley rats were exposed and then capped directly by using either OCP-based cement or a calcium hydroxide slurry (control). Histologic examinations were performed at 1, 2, and 5 weeks after the surgical procedure, and the results were analyzed statistically by using the Mann-Whitney U test (P<.05).

Results: One week after pulp capping, the initial formation of reparative dentin in the exposed areas was more notable in the calcium hydroxide group than in the OCP-based cement group. At 2 weeks, reparative dentin covered by a layer of odontoblast-like cells was observed in both groups. However, at 5 weeks, reparative dentin consisting of regular dentinal tubules was observed more frequently in the OCP-based cement group.

Conclusion: OCP-based cement allowed favorable healing processes to occur in the dental pulp.

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