- 作者：Christina Tziafa ; DDS ; MSc&lowast ; ; Eugenia Koliniotou-Koumpia ; DDS ; PhD&lowast ; ; Serafim Papadimitriou ; DDS ; PhD&dagger ; ; Dimitrios Tziafas ; DDS ; PhD&Dagger ; ; dtziaf@dent.auth.gr" class="auth_mail" title="E-mail the corresponding author
- 关键词：Biodentine ; calcium silicate ; direct pulp capping ; mineral trioxide aggregate ; miniature swine teeth ; pulp capping materials ; reparative dentin
- 刊名：Journal of Endodontics
- 出版年：2014
- 出版时间：December 2014
- 年：2014
- 卷：40
- 期：12
- 页码：1967-1971
- 全文大小：936 K
Methods
Thirty-four anterior and posterior teeth of 3 miniature swine were used. Class V or I cavities were prepared on the buccal or occlusal surfaces, respectively. Pulpal exposures were further performed using a round carbide bur 0.8 mm in diameter. Exposures were treated with white MTA Angelus (Angelus, Londrina, PR, Brazil) or Biodentine (Septodont, Saint Maur des Fosses, France), and the cavities were further restored with Biodentine. The pulpal tissue responses were histologically assessed at postoperative periods of 3 and 8 weeks. Data were statistically analyzed using the Kruskal Wallis and the Mann-Whitney U tests.
Results
Inflammatory infiltration or pulp tissue necrosis was not found in any of the specimens. All teeth showed mineralized matrix formation in the form of a complete hard tissue bridge composed of osteodentin or osteodentin followed by a discontinuous or continuous reparative dentin zone. A significantly higher thickness of the hard tissue bridge was found in the group of teeth treated with Biodentine at both 3 and 8 weeks. A number of teeth, which were under root development at the onset of the experimental procedures, exhibited ectopic pulp calcification.
Conclusions
The application of both calcium silicate–based materials in direct contact with the mechanically exposed pulp of healthy miniature swine teeth led to pulp repair with complete hard tissue bridge formation. The thickness of hard tissue bridges was significantly higher after pulp capping with Biodentine.