Healing process of dog teeth after post space preparation and exposition of the filling material to the oral environment
Healing process of dog teeth after post space preparation and exposition of the filling material to the oral environment
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DOI：
10.1590/s0103-64402003000200006
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发表时间：
2003-01-01
影响因子：
--
通讯作者：
Nery, Mauro Juvenal
中科院分区：
文献类型：
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作者：
Barbosa, Henrian Gonzaga;Holland, Roberto;Nery, Mauro Juvenal
本研究旨在观察根管充填和桩核预备后冠渗漏对根尖周组织行为的影响。采用牙胶尖侧向加压技术，用Sealer 26和Roth粘固剂对40颗狗牙进行根管预备和充填。后间隙准备后，剩余的填充材料用Lumicon临时骨水泥塞保护或不保护。在根管暴露于口腔环境90天后，处死动物，取出标本并制备用于组织形态学分析。Brown和Brenn技术显示Roth骨水泥有70%的病例发生微生物泄漏，Sealer 26有20%的病例发生微生物泄漏。当使用Lumicon塞子时，Roth骨水泥的泄漏率为30%，Sealer 26的泄漏率为0%。使用Roth骨水泥比使用Sealer 26更常观察到慢性炎症反应。得出的结论是，Lumicon的塞子在控制微生物冠渗漏方面是有效的（p = 0.05），并且Sealer 26的生物相容性更好，根管密封效果优于Roth ®（p = 0.01）。
The purpose of this study was to observe the influence of coronal leakage on the behavior of periapical tissues after root canal filling and post space preparation. Forty root canals of dogs' teeth were instrumented and filled by the lateral condensation technique with gutta percha points and the cements Sealer 26 and Roth. After post space preparation, the remaining filling material was either protected or not protected with a plug of the temporary cement Lumicon. After root canal exposition to the oral environment for 90 days, the animals were killed and specimens were removed and prepared for histomorphological analysis. The Brown and Brenn technique showed 70% of cases with microorganism leakage for Roth cement, and 20% with Sealer 26. When a plug of Lumicon was employed, there was 30% leakage for Roth cement and 0% for Sealer 26. A chronic inflammatory reaction was more frequently observed with Roth cement than with Sealer 26. It was concluded that a plug of Lumicon was efficient in controlling microorganism coronal leakage (p = 0.05), and that Sealer 26 was more biocompatible and sealed root canals better than Roth sealer (p = 0.01).