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首页> 外文期刊>The Journal of Prosthetic Dentistry >Shear peel bond strength of compomers veneered to amalgam.
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Shear peel bond strength of compomers veneered to amalgam.

机译：复合材料的剪切剥离粘合强度与汞齐齐平。

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STATEMENT OF PROBLEM: The practice of veneering compomers to amalgam restorations has not been studied. PURPOSE: This in vitro study was designed to assess the shear peel bond strength and fracture pattern of 3 currently available compomers veneered to amalgam. MATERIAL AND METHODS: Sixty cylindrical preparations were filled with amalgam. Half (30) had no surface treatment, whereas the other half were air abraded. In both groups, 10 specimens each were veneered with Dyract AP, Hytac, and F2000 according to the manufacturers' instructions. All samples were kept at 37 degrees C in 100% relative humidity for 48 hours. SPBS was assessed with a universal testing machine and fracture patterns with a stereomicroscope. The results were analyzed with 2-way ANOVA and Tukey's multiple comparison test. RESULTS: Dyract AP veneered to air-abraded amalgam had the highest SPBS (5.78 +/- 1.30 MPa); F2000 veneered to non-air-abraded amalgam had the lowest (2.99 +/- 1.4 MPa). Sandblasting significantly influenced SPBS in the case of Hytac (P<.02) and F2000 (P<.01). Within the non-air-abraded group, Dyract AP had significantly higher SPBS than Hytac (P<.03) and F2000 (P<.015). F2000 air-abraded specimens exhibited adhesive bond failure only, whereas all other groups showed both adhesive and combined bond failures. CONCLUSION: Of the 3 compomers tested for veneering to amalgam, Dyract AP showed the highest SPBS. Air-abrading the amalgam surface was found to improve the SPBS of Dyract AP, though not significantly. Low SPBS and poor adhesion indicated that F2000 is unsuitable for veneering amalgam.
机译：问题陈述：对汞合金修复体进行镶饰复合材料的实践尚未得到研究。目的：该体外研究旨在评估3种目前可贴到汞合金的复合材料的剪切剥离粘合强度和断裂模式。材料与方法：60个圆柱状制剂中装有汞齐。一半（30）没有进行表面处理，而另一半则进行了空气磨蚀。在两组中，根据制造商的说明，分别用Dyract AP，Hytac和F2000贴面贴面的10个样品。将所有样品在37℃，100％相对湿度下保持48小时。用通用测试仪评估SPBS，并用立体显微镜评估骨折类型。使用2通方差分析和Tukey多重比较测试对结果进行分析。结果：掺有空气变汞合金的Dyract AP的SPBS最高（5.78 +/- 1.30 MPa）。贴面为无气汞合金的F2000最低（2.99 +/- 1.4 MPa）。在Hytac（P <.02）和F2000（P <.01）的情况下，喷砂处理显着影响SPBS。在非充气组中，Dyract AP的SPBS明显高于Hytac（P <.03）和F2000（P <.015）。 F2000空气研磨样品仅表现出粘合失败，而其他所有组均表现出粘合失败和复合粘合失败。结论：在测试的三种用于汞齐饰面的复合物中，Dyract AP的SPBS最高。发现用空气喷射汞合金表面可以改善Dyract AP的SPBS，尽管效果不明显。 SPBS值低和附着力差表明F2000不适合用于镶面汞齐。

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