Cohen Brett I, Volovich Yekaterina, Musikant Barry Lee, Deutsch Allan S
Essential Dental Laboratories, South Hackensack, New Jersey 07606, USA.
J Endod. 2002 Feb;28(2):79-82. doi: 10.1097/00004770-200202000-00007.
The compatibility of different dental materials (root canal sealer and composite core build-up restoratives) is an important factor for a successful restoration. The aim of this in vitro study was to determine the effects on compressive and diametral tensile strength of a classical chemical cure composite resin (Henry Schein Composite Anterior-Posterior dental restorative) when in contact with either eugenol or an epoxy-resin (EZ-Fill) in a variety of situations: (a) eugenol or epoxy-resin added during mixing of a composite resin before curing; (b) vapor exposure to cured samples; and (c) specimens placed directly in eugenol or epoxy-resin (after curing). Compressive strengths and diametral tensile strengths were tested for each group. Only the addition of eugenol during mixing with the composite resin (directly before curing) resulted in specimens that were unable to be tested, because they did not achieve a full cure or hardness. For all other groups, there were no significant differences with respect to either compressive strength (p = 0.17) or diametral tensile strength (p = 0.39). Group 1 (mixed directly with eugenol) was found to be statistically different from groups 2 through 7.
不同牙科材料（根管封闭剂和复合树脂核修复材料）之间的相容性是修复成功的一个重要因素。本体外研究的目的是确定在多种情况下，一种经典化学固化复合树脂（亨利·施恩复合前后牙修复材料）与丁香酚或环氧树脂（EZ-Fill）接触时，对其压缩强度和径向拉伸强度的影响：（a）在复合树脂固化前混合时添加丁香酚或环氧树脂；（b）对固化后的样品进行蒸汽暴露；（c）将样品直接置于丁香酚或环氧树脂中（固化后）。对每组样品测试其压缩强度和径向拉伸强度。只有在与复合树脂混合时（就在固化前）添加丁香酚，才会导致样品无法进行测试，因为它们没有完全固化或达到所需硬度。对于所有其他组，在压缩强度（p = 0.17）或径向拉伸强度（p = 0.39）方面均无显著差异。发现第1组（直接与丁香酚混合）与第2至7组在统计学上存在差异。
