Paper Title:
KrF Excimer Laser Ablation of Human Enamel
  Abstract

Laser treatment is a promising technique for dental applications such as caries prevention, dental hypersensitivity reduction and improvement of bond strength of restoration materials. In this study the morphological, structural and chemical changes of enamel surface due to treatment with KrF excimer laser radiation were evaluated using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. For radiation fluences near 1 J/cm², laser processing originates a relatively porous surface due to preferential removal of material in the enamel prism sheaths. Increasing the fluence leads to a relatively flat surface with clear evidence of surface melting. The X-ray diffractograms of both treated and untreated enamel are similar and correspond to hydroxyapatite. The only modification due to the laser treatment is a slight shift of the peaks, probably, due to a loss of the structural water of hydroxyapatite. X-ray photoelectron spectroscopy confirmed that organic matter is removed from the irradiated surface but no significant changes in the mineral phase occur.

  Info
Periodical
Materials Science Forum (Volumes 587-588)
Edited by
António Torres Marques, António Fernando Silva, António Paulo Monteiro Baptista, Carlos Sá, Fernando Jorge Lino Alves, Luís Filipe Malheiros and Manuel Vieira
Pages
42-46
DOI
10.4028/www.scientific.net/MSF.587-588.42
Citation
M. Sivakumar, V. Oliveira, R. Vilar, A.M. Botelho do Rego, "KrF Excimer Laser Ablation of Human Enamel", Materials Science Forum, Vols. 587-588, pp. 42-46, 2008
Online since
June 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Quan Zeng, Yin Hui Zhang, Zhi Hua Xing, Xiao Jun Zhao
Abstract:AFM is used to study tooth surfaces (enamel and cementum) in order to compare the pattern of particle distribution and demineralization...
733
Authors: Xiao Jie Wang, Arndt Klocke, Boriana Mihailova, R. Stosch, B. Güttler, Ulrich Bismayer
Abstract:The effect of two bleaching materials on dental enamel was studied by vibrational spectroscopy. Human molar enamel sections parallel to the...
1405
Authors: Norberto Roveri, Elisa Battistella, Ismaela Foltran, Elisabetta Foresti, Michele Iafisco, Marco Lelli, Barbara Palazzo, Lia Rimondini
Abstract:New biomimetic carbonate-hydroxyapatite nanocrystals (CHA) have been designed and synthesized in order to obtain a remineralization of the...
821
Authors: Attapol Choeysuppaket, Artorn Pokaipisit, Pichet Limsuwan
Abstract:The aim of the present study was to investigate the organic and inorganic compositions of enamel and dentine after Er:YAG laser irradiation...
529
Authors: Kui Long Lv, Hai Wen Yuan, Xiang Cai Meng, Xing Yi Li
Abstract:The aim of this study is to describe the remineralization effect of the nano-HA on artificial caries. The artificial dental caries are made...
576