Avaliação dos efeitos da radiação ionizante em materiais utilizados em restaurações dentárias / EVALUATION OF EFFECTS OF IONIZING RADIATION ON MATERIALS USER IN DENTAL RESTORATIONS.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This work consisted of quantitative studies of the effects caused by ionizing radiation on materials used in dental restorations (Titanium, Amalgam, Resin Composite and Glass Ionomer) aiming the deleterious effects of radiotherapy when patients with tumors in head and neck, arising when the teeth are restored within in the field of radiation. Samples were submitted to X-ray beams of 6 MV from a linear accelerator, VARIAN 2100C model. The samples were analyzed by X-ray fluorescence techniques to compare the chemical composition before and after the irradiation. The sample were submitted to Geiger-Müller detectors and the ionization chambers in order to verify any residual radiation in the samples. The samples were also analyzed by gamma spectrometry by a Germanium detector. These tests were performed to determine small changes in the composition in the samples due to the radiation interaction. The results of this study may encourage the development of new research for alternative materials in dental restorations that can contribute to improve the quality of life of those patients with tumors of the mouth.

ASSUNTO(S)

compômero restaurações dentárias resina composta titânio radiação compômero amálgama amálgama titânio radiação resina composta restaurações dentárias ionômero de vidro ionômero de vidro

ACESSO AO ARTIGO

Documentos Relacionados