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Lasers in Medical Science
Published in: Lasers in Medical Science 1/2012

01-01-2012 | Original Article

Correlation between light transmission and permeability of human dentin

Authors: Ana Paula Silveira Turrioni, Camila Fávero de Oliveira, Fernanda Gonçalves Basso, Lilian Tan Moriyama, Cristina Kurachi, Josimeri Hebling, Vanderlei S. Bagnato, Carlos Alberto de Souza Costa

Published in: Lasers in Medical Science | Issue 1/2012

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Abstract

The influence of dentin permeability on transdentinal LED light propagation should be evaluated since this kind of phototherapy may further be clinically used to stimulate the metabolism of pulp cells, improving the healing of damaged pulps. This study evaluated the influence of the dentin permeability on the transdentinal LED light (630 nm) transmission. Forty-five 0.5-mm-thick dentin disks were prepared from the coronal dentin of extracted sound human molars. An initial measurement of transdentinal LED light transmission was carried out by illuminating the discs in the occlusal-to-pulpal direction onto a light power sensor to determine light attenuation. The discs were treated with EDTA for smear layer removal, subjected to analysis of hydraulic conductance, and a new measurement of transdentinal LED light transmission was taken. Spearman’s correlation coefficient was used for analysis of data and showed a weak correlation between dentin permeability and light attenuation (coefficient = 0.19). This result indicates that higher or lower dentin permeability does not reflect the transdentinal propagation of LED light. Significantly greater transdentinal propagation of light was observed after treatment of dentin surface with EDTA (Wilcoxon test, p < 0.05). According to the experimental conditions of this in vitro study, it may be concluded that dentin permeability does not interfere in the transdentinal LED light transmission, and that smear layer removal facilitates this propagation.
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Metadata
Title
Correlation between light transmission and permeability of human dentin
Authors
Ana Paula Silveira Turrioni
Camila Fávero de Oliveira
Fernanda Gonçalves Basso
Lilian Tan Moriyama
Cristina Kurachi
Josimeri Hebling
Vanderlei S. Bagnato
Carlos Alberto de Souza Costa
Publication date
01-01-2012
Publisher
Springer-Verlag
Published in
Lasers in Medical Science / Issue 1/2012
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-011-0931-0

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