Camps J, Pommel L, Bukiet F, About I
U.F.R Odontologie, Université Méditerranée, 27 boulevard Jean Moulin, Marseille 5 13385, France.
Dent Mater. 2004 Dec;20(10):915-23. doi: 10.1016/j.dental.2004.02.002.
The purpose of this study was to investigate the effects of modifications of the powder/liquid ratio by endodontists on the physical properties recommended by ISO standards as well as on other clinically relevant properties of zinc oxide-eugenol-based root canal sealers.
The powder/liquid ratio of two zinc oxide-eugenol-based root canal sealers (Cortisomol and Pulp Canal Sealer EWT) was recorded by 10 endodontists. The materials, prepared according to the different consistencies, were tested according to ISO standards to evaluate their physical properties. Their sealing efficiency and the release of eugenol were also evaluated on 20 single rooted teeth.
Some results varied according to the material. Nevertheless, for both cements, an increased powder/liquid ratio led to a decreased flow, an increased radiopacity and a decreased amount of eugenol released. The variations in the powder/liquid ratio did not influence the dimensional changes and the apical leakage of both cements.
Variations in the powder/liquid ratio of zinc oxide-eugenol-based root canal sealers have a limited influence on the properties of the sealers. The endodontists can prepare the zinc oxide-eugenol-based root canal sealers at their chosen consistency according to the filling technique they use.
本研究旨在调查牙髓病医生对粉液比进行调整后，对符合ISO标准推荐的氧化锌丁香酚类根管封闭剂物理性能以及其他临床相关性能的影响。
10名牙髓病医生记录了两种氧化锌丁香酚类根管封闭剂（Cortisomol和牙髓根管封闭剂EWT）的粉液比。根据不同的稠度制备材料，按照ISO标准进行测试以评估其物理性能。还在20颗单根牙上评估了它们的封闭效果和丁香酚的释放情况。
某些结果因材料而异。然而，对于两种水门汀而言，粉液比增加会导致流动性降低、射线不透性增加以及丁香酚释放量减少。粉液比的变化并未影响两种水门汀的尺寸变化和根尖渗漏。
氧化锌丁香酚类根管封闭剂粉液比的变化对封闭剂性能的影响有限。牙髓病医生可根据他们所使用的充填技术，按照自己选择的稠度来调配氧化锌丁香酚类根管封闭剂。
