Olmez A, Oztaş N, Başak F, Sabuncuoğlu B
Faculty of Dentistry, Department of Pedodontics, Gazi University, Ankara, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1998 Jul;86(1):98-103. doi: 10.1016/s1079-2104(98)90157-3.
The purpose of this study was to evaluate the histologic pulp responses of Optibond and Syntac adhesive resin systems placed directly on exposed pulp tissues.
Class V facial cavities with pulpal exposures were prepared in dogs. After acid etching of enamel margins, the cavities were restored with a composite resin after pulp-capping with one of the dentin bonding agents. The remaining exposures were capped with calcium hydroxide and amalgam as controls. The animals were killed after 7, 21, and 90 days and the pulps were evaluated histologically. Statistical analysis was carried out with the chi-square test.
There was no statistically significant difference with respect to inflammatory cell response, fibrosis, bleeding, or bacterial staining criteria over the time intervals of evaluation among the Optibond, Syntac, and calcium hydroxide groups. New dentin formation was also observed for all of the groups at the end of 90 days.
The results of direct pulp-capping with a dentinal adhesive and composite resin appear promising but further in vivo studies are recommended.
本研究旨在评估直接置于暴露牙髓组织上的Optibond和Syntac粘结树脂系统的组织学牙髓反应。
在犬类动物中制备V类面部洞穿且牙髓暴露的模型。对釉质边缘进行酸蚀后，用复合树脂修复窝洞，同时用其中一种牙本质粘结剂进行盖髓处理。其余暴露部位用氢氧化钙和汞合金覆盖作为对照。在7天、21天和90天后处死动物，并对牙髓进行组织学评估。采用卡方检验进行统计分析。
在评估时间段内，Optibond组、Syntac组和氢氧化钙组在炎症细胞反应、纤维化、出血或细菌染色标准方面无统计学显著差异。在90天结束时，所有组均观察到新牙本质形成。
用牙本质粘结剂和复合树脂直接盖髓的结果似乎很有前景，但建议进一步进行体内研究。
