Schwartz R S, Murchison D F, Walker W A
Department of Endodontics, University of Texas Health Science Center at San Antonio, School of Dentistry 78284, USA.
J Endod. 1998 Aug;24(8):564-7. doi: 10.1016/S0099-2399(98)80079-4.
Resin cements are sometimes recommended to enhance the retention of posts in endodontically treated teeth. Many sealer cements used in endodontics contain eugenol, however, which has been shown to inhibit the polymerization of resins. The purpose of this study was to evaluate the effects of a eugenol and a noneugenol sealer cement on the retention of posts. Sixty extracted canines were divided equally into four groups. Each tooth received conventional endodontic therapy and was prepared to receive a post. Two sealer cements were used in obturation: one contained eugenol and one was eugenol-free. The posts were cemented with either zinc phosphate cement or resin cement. Each combination of sealer and post cement was tested for retention on an Instron testing machine. The type of sealer used had no effect on post retention with either cement. Post retention was significantly greater with the zinc phosphate cement than the resin cement.
树脂水门汀有时被推荐用于增强根管治疗牙齿中桩的固位。然而，许多用于牙髓病学的封闭剂水门汀含有丁香酚，研究表明丁香酚会抑制树脂的聚合。本研究的目的是评估含丁香酚和不含丁香酚的封闭剂水门汀对桩固位的影响。60颗拔除的犬牙被平均分为四组。每颗牙齿接受常规根管治疗并预备以容纳桩。两种封闭剂水门汀用于根管充填：一种含丁香酚，一种不含丁香酚。桩分别用磷酸锌水门汀或树脂水门汀黏固。每种封闭剂和桩水门汀的组合在英斯特朗试验机上测试其固位力。所用封闭剂的类型对两种水门汀黏固桩的固位力均无影响。磷酸锌水门汀黏固的桩的固位力显著高于树脂水门汀。
