Visualization of root canal dentin structure irradiated by Er:YAG laser using confocal laser scanning microscopy

被引：2

作者：

Ebihara, A ^{[1
]}

Majaron, B ^{[1
]}

Liaw, LHL ^{[1
]}

Krasieva, TB ^{[1
]}

Wilder-Smith, P ^{[1
]}

机构：

[1] Tokyo Med & Dent Univ, Grad Sch, Dept Restorat Sci, Div Oral Hlth Sci,Bunkyo Ku, Tokyo 1138549, Japan

来源：

LASERS IN DENTISTRY VII | 2001年 / 4249卷

关键词：

dentin; root canal; Er : YAG laser; ablation; confocal laser microscopy;

D O I：

10.1117/12.424510

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The aim of this study was to determine the effects of varying parameters of Er:YAG laser irradiation with and without water spray cooling on root canal dentin in vitro. After horizontally removing tooth crowns from extracted human teeth, roots were axially sectioned into thin slices, exposing the root canal surface. An Er:YAG laser (Fidelis by Fotona. Ljubljana, Slovenia) delivered 10-30 J/cm(2) into a 0.4-mm diameter laser spot on the root canal surface. Single pulses of different lengths (100 - 300 mus) were applied with and without water spray cooling/irrigation, and sequences of 3 pulses at a repetition rate of 30 Hz were applied at selected pulse parameters. The irradiated samples were investigated usingonfocal laser scanning microscopy (CLSM). At most irradiation conditions, root canal dentin surface was ablated. Three-dimensional images from CLSM revealed that the cavity walls were not smooth. Depths, diameters and microsurfaces of the cavities revealed a significant difference between the cavities.

引用

页码：28 / 35

页数：8

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