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  • Title: Direct capping of human pulps with a dentin bonding system and calcium hydroxide: an immunohistochemical analysis.
    Author: Fernandes AM, Silva GA, Lopes N, Napimoga MH, Benatti BB, Alves JB.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2008 Mar; 105(3):385-90. PubMed ID: 18280971.
    Abstract:
    Pulp capping is a treatment where a protective agent is applied to an exposed pulp to allow the maintenance of its vitality and function. The present study analyzed the immunohistochemical expression of fibronectin and type III collagen in human dental pulps submitted to direct pulp capping with calcium hydroxide [Ca(OH)2] or the Single Bond adhesive system (SBAS). The results demonstrated that both proteins were not expressed in the SBAS group, although in the group capped with Ca(OH)2 a diffuse labeling in the extracellular matrix was initially observed, followed by a late expression in the odontoblast-like layer and beneath the dentin bridge. It seems that application of adhesive systems in direct contact with healthy pulps will not lead to expression of proteins that are believed to be essential for pulpal repair. Moreover, Ca(OH)2 showed good biocompatibility properties with the dental pulp tissue, inducing the expression of reparative molecules, and therefore remains the material of choice for the treatment of accidental pulp exposures.
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