Oral and Dental Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran.
J Endod. 2011 Jun;37(6):786-8. doi: 10.1016/j.joen.2011.03.010.
The addition of some chemicals to mineral trioxide aggregate (MTA) may improve the physical properties of the biomaterial. The aim of this study was to compare a combination of MTA with/without CaCl(2) as pulp-capping agents in dogs' teeth.
The dental pulp of 32 teeth in four dogs were exposed and capped with either MTA or MTA/CaCl(2). After 2 months, the animals were sacrificed, and the teeth were prepared for histological evaluation. Pulpal response to the two capping materials was evaluated in terms of necrosis, inflammation, and formation of a calcified bridge. The chi-square test was used for data analysis.
Histological results showed a higher percentage of inflammation and necrosis and a lower percentage of calcified bridge formation in MTA/CaCl(2) samples compared with MTA; however, the differences were not statistically significant (P > .05).
The addition of CaCl(2) to MTA pulp-capping agent did not improve the properties of this biomaterial.
在矿化三氧化物凝聚体（MTA）中添加某些化学物质可能会改善生物材料的物理性能。本研究的目的是比较在狗牙中使用 MTA 与添加/不添加 CaCl2 作为盖髓剂的效果。
在四只狗的 32 颗牙齿的牙髓暴露后，用 MTA 或 MTA/CaCl2 进行覆盖。2 个月后，处死动物，制备牙齿进行组织学评估。根据坏死、炎症和钙化桥形成的情况来评估两种盖髓材料的牙髓反应。采用卡方检验进行数据分析。
组织学结果显示，与 MTA 相比，MTA/CaCl2 样本的炎症和坏死比例更高，而钙化桥形成比例更低，但差异无统计学意义（P>.05）。
在 MTA 盖髓剂中添加 CaCl2 并没有改善这种生物材料的性能。
