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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Detection of microscopic cracks in dental ceramic materials by fluorescent penetrant method
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Detection of microscopic cracks in dental ceramic materials by fluorescent penetrant method

机译：荧光渗透法检测牙科陶瓷材料中的细微裂纹

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摘要

Ceramic materials are used as implants and prostheses because of their excellent biocompatibility and in the dental field beyond that, because of esthetic advantages and the little plaque accumulation. A disadvantage is their sensitivity to microscopic cracks because of their brittleness. Strength-deteriorating microscopic cracks can be introduced into the ceramic surface by the manufacturing process. The objective of this study was to evaluate three methods on their efficiency to detect microscopic surface cracks of clinical relevance in dental ceramic materials. These methods were light-optical microscopy, fluorescent microscopy after penetration with a fluorescent liquid, and scanning electron microscopy (SEM). It was found that microscopic cracks of critical sizes can be detected using the fluorescent penetrant method, which was not to be proven by light-optical microscopy and even not by SEM. We conclude from our study that the fluorescent penetrant method could help to decrease clinical failures of dental ceramic components that are caused by surface microscopic cracks from the manufacturing process, if this method was routinely performed before the clinical use of the ceramic components.
机译：陶瓷材料由于其优异的生物相容性而被用作植入物和假体，并且由于其美学优势和很少的菌斑积聚而在牙科领域中得到了应用。缺点是它们由于脆性而对微观裂纹敏感。可以通过制造工艺将强度降低的微观裂纹引入陶瓷表面。这项研究的目的是评估三种方法在检测牙科陶瓷材料中具有临床意义的微观表面裂纹方面的效率。这些方法是光光学显微镜，渗透荧光液体后的荧光显微镜和扫描电子显微镜（SEM）。已经发现，可以使用荧光渗透剂方法检测到临界尺寸的微观裂纹，这没有被光学显微镜甚至SEM都没有证明。从我们的研究中可以得出结论，如果这种方法是在陶瓷组件临床使用前常规进行的，则荧光渗透法可以帮助减少牙科陶瓷组件的临床故障，这些故障是由制造过程中的表面微观裂纹引起的。

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