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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Intrapupal temperature variation during Er,Cr: YSGG enamel irradiation on carries prevention

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Author(s):
Patrícia Moreira de Freitas [1] ; Débora Soares-Geraldo [2] ; Ana Cristina Biella-Silva [3] ; Amanda Verna Silva [4] ; Bruno Lopes da Silveira [5] ; Carlos de Paula Eduardo [6]
Total Authors: 6
Affiliation:
[1] University of São Paulo. School of Dentistry. Department of Restorative Dentistry - Brasil
[2] University of São Paulo. School of Dentistry. Special Laboratory of Lasers in Dentistry - Brasil
[3] University of São Paulo. School of Dentistry. Department of Restorative Dentistry - Brasil
[4] University of São Paulo. School of Dentistry. Special Laboratory of Lasers in Dentistry - Brasil
[5] University of São Paulo. School of Dentistry. Department of Restorative Dentistry - Brasil
[6] University of São Paulo. School of Dentistry. Department of Restorative Dentistry - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Journal of Applied Oral Science; v. 16, n. 2, p. 95-99, 2008-04-00.
Abstract

Studies have shown the cariostatic effect of Er,Cr:YSGG (2.78 mm) laser irradiation on human enamel and have suggested its use on caries prevention. However there are still no reports on the intrapulpal temperature increase during enamel irradiation using parameters for caries prevention. The aim of this in vitro study was to evaluate the temperature variation in the pulp chamber during human enamel irradiation with Er,Cr:YSGG laser at different energy densities. Fifteen enamel blocks obtained from third molars (3 x 3 x 3 mm) were randomly assigned to 3 groups (n=5): G1 - Er,Cr:YSGG laser 0.25 W, 20 Hz, 2.84 J/cm², G2 - Er,Cr:YSGG laser 0.50 W, 20 Hz, 5.68 J/cm², G3 - Er,Cr:YSGG laser 0.75 W, 20 Hz, 8.52 J/cm². During enamel irradiation, two thermocouples were fixed in the inner surface of the specimens and a thermal conducting paste was used. One-way ANOVA did not show statistically significant difference among the experimental groups (a=0.05). There was intrapulpal temperature variation <0.1ºC for all irradiation parameters. In conclusion, under the tested conditions, the use of Er,Cr:YSGG laser with parameters set for caries prevention lead to an acceptable temperature increase in the pulp chamber. (AU)

FAPESP's process: 98/14270-8 - Center for Optical and Photonics Science
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC