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首页> 外文期刊>Applied Surface Science >Bio-active glass air-abrasion has the potential to remove resin composite restorative material selectively
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Bio-active glass air-abrasion has the potential to remove resin composite restorative material selectively

机译：生物活性玻璃的空气磨蚀具有选择性去除树脂复合修复材料的潜力

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摘要

The aims of this study were to assess: (a) the chemistry, morphology and bioactivity of bio-active glass (BAG) air-abrasive powder, (b) the effect of three air-abrasion operating parameters: air pressure, powder flow rate (PFR) and the abrasive powder itself, on the selective removal of resin composite and (c) the required "time taken". BAG abrasive particles were characterised using scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDX) and Fourier-transform infrared spectroscopy (FTIR). Standardised resin composite restorations created within an enamel analogue block (Macor™) in vitro, were removed using air-abrasion undersimulated clinical conditions. 90 standardised cavities were scanned before and after resin composite removal using laser profilometry and the volume of the resulting 3D images calculated. Multilevel linear model was used to identify the significant factors affecting Macor™ removal. BAG powder removed resin composite more selectively than conventional air-abrasion alumina powder using the same operating parameters (p ＜ 0.001) and the effect of altering the unit's operating parameters was significant (p ＜ 0.001). In conclusion, BAG powder is more efficient than alumina in the selective removal of resin composite particularly under specific operating parameters, and therefore may be recommended clinically as a method of preserving sound enamel structure when repairing and removing defective resin composite restorations.
机译：这项研究的目的是评估：（a）生物活性玻璃（BAG）空气磨料粉的化学，形态和生物活性，（b）三种空气磨料操作参数的影响：气压，粉末流量（PFR）和磨料粉本身，选择性地去除树脂复合材料和（c）所需的“花费时间”。使用扫描电子显微镜-能量色散X射线光谱法（SEM-EDX）和傅立叶变换红外光谱法（FTIR）对BAG磨料颗粒进行表征。在模拟的临床情况下，使用空气磨蚀去除了在搪瓷类似物块（Macor™）中在体外创建的标准化树脂复合修复体。在使用激光轮廓分析仪去除树脂复合材料之前和之后，扫描了90个标准型腔，并计算了所得3D图像的体积。多级线性模型用于确定影响Macor™去除的重要因素。在相同的操作参数（p ＜0.001）下，BAG粉末比传统的空气磨蚀氧化铝粉末更能选择性地去除树脂复合材料（p ＜0.001），改变单元操作参数的效果显着（p ＜0.001）。总之，在选择性去除树脂复合材料时，尤其是在特定的操作参数下，BAG粉末比氧化铝更有效，因此，在临床上，当修复和去除有缺陷的树脂复合材料修复体时，BAG粉末可作为一种保留良好牙釉质结构的方法而被推荐使用。

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  • 来源
    《Applied Surface Science》 |2014年第1期|272-276|共5页
  • 作者

    Hussam Milly; Manoharan Andiappan; Ian Thompson; Avijit Banerjee;

  • 作者单位

    Biomaterials, Biomimetics & Biophotonics Research Group, Kings College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK;

    Unit of Dental Public Health, Kings College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK;

    Biomaterials, Biomimetics & Biophotonics Research Group, Kings College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK;

    Biomaterials, Biomimetics & Biophotonics Research Group, Kings College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK,Unit of Conservative Dentistry, King's College London Dental Institute at Guy's Hospital, King's Health Partners, London, UK Unit of Conservative Dentistry, King's College London Dental Institute, Floor 26, Tower Wing, Guy's Dental Hospital, London SE1 9RT, UK;

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

    Air-abrasion; Alumina; Bio-active glass (BAG); Operating parameters; Resin composite;

    机译：空气磨损;氧化铝;生物活性玻璃（BAG）;操作参数;树脂复合材料;

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