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BioMed Research International
Volume 2016, Article ID 2591273, 9 pages
Research Article

Clinical and Histological Evaluation of Direct Pulp Capping on Human Pulp Tissue Using a Dentin Adhesive System

1Department of Conservative Dentistry and Endodontics, Pomeranian Medical University, Szczecin, Poland
2Department of Preclinical Conservative Dentistry and Preclinical Endodontics, Pomeranian Medical University, Szczecin, Poland
3Department of Forensic Medicine, Pomeranian Medical University, Szczecin, Poland
4Department of General Dentistry, Pomeranian Medical University, Szczecin, Poland
5Department of Gerodontology, Pomeranian Medical University, Szczecin, Poland

Received 18 May 2016; Revised 10 August 2016; Accepted 1 September 2016

Academic Editor: Hojae Bae

Copyright © 2016 Alicja Nowicka et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. This study presents a clinical and histological evaluation of human pulp tissue responses after direct capping using a new dentin adhesive system. Methods. Twenty-eight caries-free third molar teeth scheduled for extraction were evaluated. The pulps of 22 teeth were mechanically exposed and randomly assigned to 1 of 2 groups: Single Bond Universal or calcium hydroxide. Another group of 6 teeth acted as the intact control group. The periapical response was assayed, and a clinical examination was performed. The teeth were extracted after 6 weeks, and a histological analysis was performed. The pulp status was assessed, and the thickness of the dentin bridge was measured and categorized using a histological scoring system. Results. The clinical phase was asymptomatic for Single Bond Universal patients. Patients in the calcium hydroxide group reported mild symptoms of pain, although the histological examination revealed that dentin bridges with or without limited pulpitis had begun forming in each tooth. The universal adhesive system exhibited nonsignificantly increased histological signs of pulpitis () and a significantly weaker thin mineralized tissue layer () compared with the calcium hydroxide group. Conclusion. The results suggest that Single Bond Universal is inappropriate for human pulp capping; however, further long-term studies are needed to determine the biocompatibility of this agent.