CO2 Laser Improves 45S5 Bioglass Interaction with Dentin
CO2 Laser Improves 45S5 Bioglass Interaction with Dentin
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DOI：
10.1177/0022034510387793
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发表时间：
2011-02-01
影响因子：
7.6
通讯作者：
Tagami, J.
中科院分区：
文献类型：
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作者：
Bakry, A. S.;Takahashi, H.;Tagami, J.
Bioglass 45S5是一种生物活性玻璃，可以在矿化的硬组织上形成一层钙磷晶体。本研究将45S5生物玻璃与磷酸混合，用CO2激光照射，观察其对牙本质过敏症的治疗作用。采用场发射扫描电子显微镜(FE-SEM)和X射线能谱仪(EDS)对改性后的牙本质表面进行了化学和微观形态分析，并用X射线衍射仪(X射线衍射仪)分析了牙本质表面的晶体结构。此外，利用纳米压痕测试了新形成的膜层的力学性能。结果表明，45S5生物玻璃对牙本质小管口有钙磷晶体的封闭作用。CO2激光的应用潜在地改善了这些晶体的机械组织。
Bioglass 45S5 is a bioactive glass that can create a layer of calcium-phosphate crystals on mineralized hard tissues. In this study, 45S5 bioglass was mixed with phosphoric acid and irradiated with CO 2 laser and examined as a possible aid in the treatment of dentin hypersensitivity. The dentinal surface modified by the aforementioned technique was chemically and micro-morphologically examined with a field emission scanning electron microscope (FE-SEM) equipped with an energy-dispersive x-ray spectroscope (EDS), and the crystalline structures of the examined dentinal surfaces were examined by x-ray diffraction (XRD). Moreover, the mechanical properties of the newly formed layer were examined by nanoindentation. The results showed that 45S5 bioglass could occlude the dentinal tubule orifices with calcium-phosphate crystals. The application of CO2 laser potentially improved the mechanical organization of these crystals.