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Femtosecond laser ablation on dental hard tissues-Analysis of ablated profile near an interface using local effective intensity

机译:牙齿硬组织上的飞秒激光烧蚀 - 利用局部有效强度分析界面附近的烧蚀剖面

摘要

This study evaluated the process of ablation produced by a Ti:Sapphire femtosecond laser under different average powers taking place at the enamel/dentin interface. Based on the geometry of ablated microcavities the effective intensity for ablation was obtained. This study shows the validity for the local effective intensity analysis and allows a quantification of the variation in the ablation geometry taking place at the interface of two naturally different materials. It shows that the variation of the diameter of the ablated region as a function of the cavity depth comes essentially from a mechanism of effective intensity attenuation, as a result of a series of complex effects. Additionally, our data are sufficient to predict that a discontinuity on the ablation profile will occur on the interface between two biological media: enamel-dentin, showing a suddenly jump on the ablated cavity dimensions.
机译:这项研究评估了Ti:Sapphire飞秒激光在牙釉质/牙本质界面发生的不同平均功率下产生的烧蚀过程。基于烧蚀的微腔的几何形状,获得了有效的烧蚀强度。这项研究显示了局部有效强度分析的有效性,并允许量化两种自然不同材料的界面处发生的烧蚀几何形状的变化。结果表明,由于一系列复杂的影响,烧蚀区域的直径随腔深度的变化基本上来自有效强度衰减的机制。此外,我们的数据足以预测消融曲线的不连续性将在两种生物介质(牙釉质-牙本质)之间的界面上发生,表明消融腔体尺寸突然跳跃。

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