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首页> 外文期刊>The Journal of Prosthetic Dentistry >The effect of dentin pretreatment on the microtensile bond strength of self-adhesive resin cements.
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The effect of dentin pretreatment on the microtensile bond strength of self-adhesive resin cements.

机译：牙本质预处理对自粘树脂胶粘剂微拉伸粘合强度的影响。

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STATEMENT OF PROBLEM: Self-adhesive cements have lower bond strength than conventional resin cements that rely on the application of etch-and-rinse adhesive systems. PURPOSE: The purpose of this study was to evaluate the effect of tannic and polyacrylic acid on the microtensile bond strength of self-adhesive resin cements to dentin. MATERIAL AND METHODS: Eighteen molar crowns were flattened to expose dentin and divided into 3 groups according to the dentin pretreatment: (1) control, without surface treatment; (2) 25% polyacrylic acid solution (Ketac Conditioner); (3) 20% tannic acid. Composite resin (Tescera) blocks were luted to dentin surfaces using 2 self-adhesive resin cements (RelyX Unicem or Maxcem Elite) (n=3). All specimens were stored in distilled water for 24 hours, sectioned into beams (1 mm(2)), and tested to failure using a microtensile method at a crosshead speed of 1 mm/min. The data were statistically analyzed using 2-way ANOVA and Fisher's PLSD tests (alpha=.05). RESULTS: The polyacrylic acid significantly improved the microtensile bond strength of RelyX Unicem (14.92 +/-4.94 MPa) when compared to the control group (8.35 +/-1.99 MPa) and tannic acid treatment (8.38 +/-2.67 MPa) (P<.001). Dentin surface treatment did not affect the microtensile bond strength of Maxcem Elite cemented groups (control, 8.45 +/-3.21 MPa; polyacrylic acid, 9.53 +/-9.95 MPa; tannic acid, 6.89 +/-4.45 MPa). CONCLUSIONS: Dentin pretreatment with polyacrylic acid improved the microtensile bond strength of RelyX Unicem.
机译：问题陈述：自粘水泥的粘结强度低于传统的树脂树脂，后者依靠蚀刻和冲洗粘合剂系统的应用。目的：本研究的目的是评估单宁和聚丙烯酸对自粘树脂胶粘剂与牙本质的微拉伸粘合强度的影响。材料与方法：将18个磨牙牙冠弄平以暴露牙本质，根据牙本质预处理将其分为3组：（1）对照，不进行表面处理; （2）25％的聚丙烯酸溶液（Ketac调理剂）; （3）20％单宁酸。使用2种自粘树脂胶粘剂（RelyX Unicem或Maxcem Elite）将复合树脂（Tescera）块粘结到牙本质表面（n = 3）。将所有标本在蒸馏水中保存24小时，切成横梁（1 mm（2）），并使用微拉伸方法以十字头速度1 mm / min测试其是否破裂。使用2通ANOVA和Fisher的PLSD测试（alpha = .05）对数据进行统计分析。结果：与对照组（8.35 +/- 1.99 MPa）和鞣酸处理（8.38 +/- 2.67 MPa）相比，聚丙烯酸显着提高了RelyX Unicem的微拉伸粘合强度（14.92 +/- 4.94 MPa）。 <.001）。牙本质表面处理不影响Maxcem Elite胶凝基团的微拉伸粘合强度（对照组为8.45 +/- 3.21 MPa;聚丙烯酸为9.53 +/- 9.95 MPa;单宁酸为6.89 +/- 4.45 MPa）。结论：用聚丙烯酸预处理牙本质可改善RelyX Unicem的微拉伸粘合强度。

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