Sağlam Baran Can, Koçak Mustafa Murat, Koçak Sibel, Türker Sevinç Aktemur, Arslan Dilara
1 Faculty of Dentistry, Department of Endodontics, Bülent Ecevit University , Zonguldak, Turkey .
Photomed Laser Surg. 2015 Feb;33(2):77-81. doi: 10.1089/pho.2014.3845. Epub 2015 Feb 5.
The aim of this study was to evaluate the color and enamel structure changes after intracoronal bleaching with sodium perborate under neodymium:yttrium-aluminum-garnet (Nd:YAG) and diode laser irradiation.
Although some studies investigated the efficacy of laser irradiation during intracoronal bleaching, no study has been conducted to investigate the changes in both color and enamel structure during intracoronal bleaching with laser irradiation.
Thirty-six extracted mandibular incisors were used. The root canals were prepared and filled with AH Plus and gutta-percha. Baseline color values and Raman spectra were obtained from all samples. The samples were randomly divided into three groups as follows: group 1, intracoronal bleaching with sodium perborate plus NdYAG laser irradiation; group 2, intracoronal bleaching with sodium perborate plus diode laser irradiation; and group 3, intracoronal bleaching with sodium perborate without any laser irradiation. Following the bleaching procedures, the final baseline color values and Raman spectra were obtained. The baseline and final values were statistically analyzed. Statistical analyses were performed with SPSS 18.0 software using Anova and the Kruskal-Wallis test.
There was a significant difference between the Nd:YAG laser and control groups (p<0.05). There was no significant difference between the diode laser group and the control group, or the diode laser group and the Nd:YAG laser group. There was no significant difference among all groups in terms of Raman relative intensity (RRI) and fluorescence intensity (FI) percentage values (p>0.05).
Laser application, especially Nd:YAG laser irradiation, was able to increase the efficacy of intracoronal bleaching with sodium perborate. Laser irradiation significantly increased the bleaching efficacy without any changes in the enamel surface structure.
本研究旨在评估在钕钇铝石榴石（Nd:YAG）和二极管激光照射下，使用过硼酸钠进行冠内漂白后牙齿颜色和牙釉质结构的变化。
尽管一些研究调查了激光照射在冠内漂白过程中的效果，但尚未有研究探讨激光照射下冠内漂白过程中颜色和牙釉质结构的变化。
使用36颗拔除的下颌切牙。预备根管并使用AH Plus和牙胶充填。获取所有样本的基线颜色值和拉曼光谱。将样本随机分为三组：第1组，用过硼酸钠加NdYAG激光照射进行冠内漂白；第2组，用过硼酸钠加二极管激光照射进行冠内漂白；第3组，用过硼酸钠进行冠内漂白，不进行任何激光照射。漂白程序完成后，获取最终的基线颜色值和拉曼光谱。对基线值和最终值进行统计学分析。使用SPSS 18.0软件，采用方差分析和Kruskal-Wallis检验进行统计分析。
Nd:YAG激光组与对照组之间存在显著差异（p<0.05）。二极管激光组与对照组之间，以及二极管激光组与Nd:YAG激光组之间均无显著差异。在拉曼相对强度（RRI）和荧光强度（FI）百分比值方面，所有组之间均无显著差异（p>0.05）。
激光应用，尤其是Nd:YAG激光照射，能够提高过硼酸钠冠内漂白的效果。激光照射显著提高了漂白效果，且牙釉质表面结构无任何变化。
