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Type: Artigo
Title: FT-IR spectroscopy assessment of aesthetic dental materials irradiated with low-dose therapeutic ionizing radiation
Author: Cruz, A.D.
Almeida, S.M.
Rastelli, A.N.S.
Bagnato, V.S.
Byscolo, F.N.
Abstract: The aim of the present study was to evaluate the effects of low-dose therapeutic ionizing radiation on different aesthetic dental materials. Forty five specimens (n = 45) of three different aesthetic restorative materials were prepared and randomly divided into five groups: G1 (control group); G2, G3, G4, G5 experimental groups irradiated respectively with 0.25, 0.50, 0.75, and 1.00 Gy of gamma radiation by the 60Co teletherapy machine. Chemical analyses were performed using a FT-IR Nicolet 520 spectrophotometer with reflectance diffuse technique. Even a minimal exposition at ionizing radiation in therapeutic doses can provide chemical changes on light-cured composite resins. The three studied restorative materials showed changes after exposure at gamma radiation, however the increase of the radiation dose did not contribute to an increase in this effect.
Subject: Análise espectral
Radiação ionizante
Country: Reino Unido
Editor: Institute of Physics Publishing
Rights: Fechado
Identifier DOI: 10.1134/S1054660X09030189
Date Issue: 2009
Appears in Collections:FOP - Artigos e Outros Documentos

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