Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Contents
XPS analysis of the dentin irradiated by Er:YAG laser
Masanori OMAE, Yasuo SHINNOU, Kumiko TANAKA, Tomoko ABO, Takashi NAKATA, Koichiro SUZUKI, Yoshinori HATSUOKA, Naohiro IWATA, Kazushi YOSHIKAWA, Yoshihiro NISHITANI, Kazuyo YAMAMOTO, Masahiro YOSHIYAMA
著者情報
キーワード: XPS, Dentin, Er:YAG laser
ジャーナル フリー

2009 年 28 巻 4 号 p. 471-476

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The aim of this study was to investigate the effect of Er:YAG laser irradiation on human dentin surface using X-ray photoelectron spectroscopy (XPS). 10 human dentin disks were prepared from extracted human molars for XPS analysis. These specimens were divided into two groups of five: a control group and group that were irradiated by an Er:YAG laser beam (100 mJ, 1Hz). All specimens were analyzed by XPS over a wide scanning range and narrow scanning ranges. The Ca/P ratio was calculated from the XPS results.
In the results, the binding energies of Ca, P, and N in the laser-irradiated group were higher than those in the control group. The Ca/P ratio of the Er:YAG laser irradiated group (1.24±0.05) was significantly lower than that of the control group (1.52±0.16).
This study showed that Er:YAG laser irradiation decreased Ca/P ratio and denatured the collagen of human dentin.
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© 2009 The Japanese Society for Dental Materials and Devices
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