Selective Removal of Caries Using Laser Absorption Properties with Experimental Caries-detecting Dye Solutions.

在本研究中，为了检查在各种波长下激光吸收的颜色相关特异性，我们用激光照射已经用红色、蓝色、绿色和紫色龋齿检测溶液（CDS）染色的滤纸，使用激光能量传感器测量来自穿透滤纸的激光的能量，并计算吸收率。我们制备了紫色和绿色实验CDS，并将它们用于本实验。将一滴CDS置于定性滤纸（厚度：0.26 mm）上，并自然干燥。然后，我们使用激光功率计测量穿透滤纸的能量。在这项研究中，我们使用了P-LASER^<（R）>二极管激光发生器、Erwin AdvErL^<（R）> Er：YAG激光发生器和Panalas^<（R）> CO 5和CO_2激光发生器。我们计算了染色相关照射能量的吸收率，将通过激光照射而不使用滤纸获得的值作为对照。数据采用单因素方差分析和Scheffe检验进行统计学分析（n=3）。绿色显示半导体激光器的最高吸收率，其次是蓝色、紫色和红色。红、蓝、绿色的吸收值有显著性差异（p<0.01）。绿色显示Er：YAG激光的最高吸收率，其次是蓝色、紫色和红色。紫色对CO_2激光的吸收率最高，其次是绿色、红色和蓝色。Er：YAG激光和CO_2激光的吸收率在不同颜色之间均无显著差异，提示用蓝色或绿色CDS染色后进行半导体激光治疗有利于选择性去除龋损。

In this study, to examine the color-related specificity of laser absorption at various wavelengths, we irradiated filter paper, which had been stained with red, blue, green, and purple caries-detecting solution (CDS), with a laser, measured the energy from the laser penetrating the filter paper using a laser energy sensor, and calculated the rate of absorption.In addition to commercially available red and blue CDS, we prepared purple and green experimental CDS, and used them in this experiment. One drop of the CDS was placed on Qualitative filter paper (thickness: 0.26mm), and spontaneously dried. Then, we measured the energy penetrating the filter paper using a laser power meter. In this study, we used a P-LASER^< (R)> diode laser generator, an Erwin AdvErL^< (R)> Er:YAG laser generator, and a Panalas^< (R)> CO5Σ CO_2 laser generator. We calculated the absorption rate of staining-related irradiation energy, regarding values obtained by laser irradiation without the filter paper as controls. The data were statistically analyzed using one-way variance analysis and Scheffe's test (n=3).Green showed the highest absorption rate of the diode laser, followed by blue, purple, and red. There were significant differences between the absorption values for red and those for blue and green (p<0.01). Green showed the highest rate of absorption of the Er:YAG laser, followed by blue, purple, and red. Purple showed the highest rate of absorption of the CO_2 laser, followed by green, red, and blue. Neither the Er:YAG nor CO_2 laser showed any significant differences in their absorption rates among the colors.These findings suggest that caries staining with blue or green CDS for diode laser treatment facilitates selective removal.