Holland R, de Souza V, Nery M J, Faraco Júnior I M, Bernabé P F, Otoboni Filho J A, Dezan Júnior E
Faculty of Dentistry of Araçatuba, UNESP, Araçatuba, SP, Brazil.
Braz Dent J. 2001;12(1):3-8.
The subject of this study was to observe the rat subcutaneous connective tissue reaction to implanted dentin tubes filled with mineral trioxide aggregate, Portland cement or calcium hydroxide. The animals were sacrificed after 7 or 30 days and the undecalcified specimens were prepared for histological analysis with polarized light and Von Kossa technique for mineralized tissues. The results were similar for the studied materials. At the tube openings, there were Von Kossa-positive granules that were birefringent to polarized light. Next to these granulations, there was an irregular tissue like a bridge that was Von Kossa-positive. The dentin walls of the tubes exhibited in the tubules a structure highly birefringent to polarized light, usually like a layer and at different depths. The mechanism of action of the studied materials has some similarity.
本研究的主题是观察大鼠皮下结缔组织对植入的充满三氧化矿物凝聚体、波特兰水泥或氢氧化钙的牙本质小管的反应。在7天或30天后处死动物，并制备未脱钙标本，用于偏振光和用于矿化组织的冯·科萨技术的组织学分析。所研究材料的结果相似。在小管开口处，有对偏振光双折射的冯·科萨阳性颗粒。在这些颗粒旁边，有一个不规则的组织，像一座桥，是冯·科萨阳性的。小管的牙本质壁在小管中呈现出对偏振光高度双折射的结构，通常像一层，且处于不同深度。所研究材料的作用机制有一些相似之处。
