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Femtosecond laser ablation on dental hard tissues—Analysis of ablated profile near an interface using local effective intensity

  • Laser Methods in Chemistry, Biology, and Medicine
  • Published:
Laser Physics

Abstract

This study evaluated the process of ablation produced by a Ti:Sapphire femtosecond laser under different average powers taking place at the enamel/dentin interface. Based on the geometry of ablated microcavities the effective intensity for ablation was obtained. This study shows the validity for the local effective intensity analysis and allows a quantification of the variation in the ablation geometry taking place at the interface of two naturally different materials. It shows that the variation of the diameter of the ablated region as a function of the cavity depth comes essentially from a mechanism of effective intensity attenuation, as a result of a series of complex effects. Additionally, our data are sufficient to predict that a discontinuity on the ablation profile will occur on the interface between two biological media: enamel-dentin, showing a suddenly jump on the ablated cavity dimensions.

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Author information

Authors and Affiliations

  1. Graduate Program in Dentistry, Paulista University—UNIP, São Paulo, SP, Brazil

    M. Dutra-Correa

  2. Physical Institute of São Carlos, University of São Paulo—USP, São Carlos, SP, Brazil

    G. Nicolodelli, C. Kurachi & V. S. Bagnato

  3. Department of Restorative Dentistry, São Paulo State University—UNESP, São José dos Campos, SP, Brazil

    J. R. Rodrigues

Authors
  1. M. Dutra-Correa
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  2. G. Nicolodelli
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  3. J. R. Rodrigues
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  4. C. Kurachi
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  5. V. S. Bagnato
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Correspondence to M. Dutra-Correa.

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Original Text © Astro, Ltd., 2011.

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Dutra-Correa, M., Nicolodelli, G., Rodrigues, J.R. et al. Femtosecond laser ablation on dental hard tissues—Analysis of ablated profile near an interface using local effective intensity. Laser Phys. 21, 965–971 (2011). https://doi.org/10.1134/S1054660X11090064

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  • DOI: https://doi.org/10.1134/S1054660X11090064

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