Crystalline structure of dental enamel after Ho:YLF laser irradiation

被引：35

作者：

Bachmann, L

Craievich, AF

Zezell, DM

机构：

[1] IPEN CNEN SP, CLA, BR-05508900 Sao Paulo, Brazil

[2] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

来源：

ARCHIVES OF ORAL BIOLOGY | 2004年 / 49卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

holmium; enamel; X-ray diffraction; tetracalcium phosphate; hydroxyapatite;

D O I：

10.1016/j.archoralbio.2004.05.009

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Irradiation of teeth with lasers using specific wavelengths and energy densities produces surface melting. This effect has been already applied to different procedures such as caries prevention and hypersensitivity reduction. The aim of this study is to characterize the crystalline structure of bovine enamel after holmium laser irradiation. A holmium laser (Ho:YLF) with emission wavelength of 2065 nm was used. Enamel tissues were irradiated in ablative regime and their structures before and after irradiation were analyzed using the powder X-ray diffraction technique. The X-ray diffraction patterns of non-irradiated enamel correspond to carbonated hydroxyapatite and those produced by irradiated samples indicate the existence of a mixture of two crystalline phases: hydroxyapatite and tetracalcium phosphate. The structural characteristics of holmium irradiated enamel were compared with those of the same tissue irradiated with other lasers. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：923 / 929

页数：7

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