Study of evolution of zinc phosphate cement´s setting reaction by laser, applying an optics technique of dynamic speckle / "Estudo da evolução da reação de presa do cimento de fosfato de zinco através de luz laser, aplicando a técnica óptica de speckle dinâmico"

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The prosthesis cementation and/or other prosthetic elements, consists in permanent concern, since one of the major applications of zinc phosphate cement is as lutting agent. This study aims at the microstructural analyze to the evolution of the zinc phosphate cement´s setting reaction. More specifically, searched to verify, based on the known phenomenon as dynamic speckle, how long takes the setting reaction of zinc phosphate cement, since the moment of the ending of the mix until your complete setting, in environment with air relative humidity and temperature controlled. The used methodology consist in the analysis of dynamic speckle gotten through the laser, in a non-destructive assay. From the data supplied by the laser speckle, it was possible to establish the temporal correlation coefficients and intensity moments. The statistical treatment, allowed to compare and relate with other traditional, chemical and mechanical macrostructural parameters, already existing and studied by other authors. It can be conclude that outcomes achieved by the new technique and with the conventional methods are convergent.

ASSUNTO(S)

laser speckle métodos dental cements prótese dentária cimentos dentários utilization dental prosthesis laser zinc phosphate cement methods utilização cimento de fosfato de zinco laser speckle análise analysis laser

ACESSO AO ARTIGO

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