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首页> 外文期刊>Journal oflaser Applications >Shear bond stress of composite bonded to excimer laser treated dentin
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Shear bond stress of composite bonded to excimer laser treated dentin

机译：受激准分子激光处理牙本质的复合材料的剪切粘结应力

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摘要

The aim of this work was to study the bond strength of resin composite bonded to dentin surfaces treated with KrF excimer laser radiation, untreated surfaces, and acid-etched surfaces using a single-plane shear method. Dentin specimens cut from freshly extracted permanent molar teeth were subjected to laser treatment with a KrF excimer laser (248 nm) using a fluence of 1 J/cm~2. The bond strength was greater for acid-etched specimens than for laser treated or untreated specimens. The low strength of the bond to laser treated surfaces is probably due to a shift from a mixed to a cohesive rupture mechanism. It was concluded from this study that surface treatment of dentin surfaces with KrF excimer laser under the conditions described does not significantly improve the shear bond strength to composites.
机译：这项工作的目的是使用单平面剪切方法研究结合到用KrF受激准分子激光辐射处理的牙本质表面，未处理的表面和酸蚀表面上的树脂复合材料的粘合强度。从刚拔出的恒牙臼齿切下的牙本质标本用KrF准分子激光（248 nm）以1 J / cm〜2的注量进行激光处理。酸蚀样品的结合强度大于激光处理或未处理的样品。与激光处理过的表面的结合强度低可能是由于从混合破裂机制转变为内聚破裂机制。从这项研究得出的结论是，在所述条件下用KrF准分子激光对牙本质表面进行表面处理不会显着提高复合材料的剪切粘结强度。

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  • 来源
    《Journal oflaser Applications》 |2009年第3期|129-132|共4页
  • 作者

    M. Sivakumar; V Oliveira; R. Vilar; S. Oliveira;

  • 作者单位

    Depto. Engenharia Materials, Instituto Superior Tecnico, Universidade Tecnica Lisboa, Av. Rovisco Pais n. 1, 1049-001 Lisboa, Portugal;

    Depto. Engenharia Materials, Instituto Superior Tecnico, Universidade Tecnica Lisboa, Av. Rovisco Pais n. 1, 1049-001 Lisboa, Portugal;

    Depto. Engenharia Materials, Instituto Superior Tecnico, Universidade Tecnica Lisboa, Av. Rovisco Pais n. 1, 1049-001 Lisboa, Portugal;

    Faculdade Medicina Dentdria, Universidade Lisboa, Cidade Universitdria, 1648-003 Lisboa, Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dentin; excimer laser; shear bond stress;

    机译：牙本质准分子激光剪应力;

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