Testing of residual monomer content reduction possibility on acrilic resins quality
نویسندگان
چکیده
منابع مشابه
Diffusion of residual monomer in polymer resins.
A simplified mathematical model which made use of Fick's laws of diffusion written in spherical coordinates was developed to describe the rate of diffusion of residual monomers from polymer resins. The properties of the monomer-polymer system which influenced the amount of monomer remaining in the polymer as a function of time were the diffusivity and solubility of the monomer in the polymer, a...
متن کاملRelease of methyl methacrylate from heat-cured and autopolymerized resins: cytotoxicity testing related to residual monomer.
Three heat-cured and three autopolymerized acrylic denture bases with different mixing proportions and/or processing methods were investigated for the amount of residual monomer content and methyl methacrylate (MMA) released into saliva after incubation during the first and second 24 hours after processing. A corresponding range of concentrations of MMA was also used to test for cell cytotoxici...
متن کاملThe evaluation of residual monomer released after polymerization of four different composite resins
Purpose: The aim of this study is to compare the amount of Bis-GMA, UDMA, and TEGDMA released from four different types of composite resins in three different time periods using the HPLC device. Materials and Methods: Four different composite resin materials with nanofiller content were used in the study. A total of 40 sample discs were prepared and polished to provide 10 pieces for each mater...
متن کاملEffect of residual monomer on viscoelastic properties of pour denture base resins.
Recently, some fluid or pour resins have been introduced to simplify the processing of dentures. However, because of the presence of relatively high residual monomer, the mechanical properties of these resins are inferior to those of heat cured resins.1,2) The purpose of the present investigation is to measure the quantities of residual monomer and to investigate the effect of the residual mono...
متن کامل[Residual monomer content determination in some acrylic denture base materials and possibilities of its reduction].
BACKGROUND/AIM Polymethyl methacrylate is used for producing a denture basis. It is a material made by the polymerization process of methyl methacrylate. Despite of the polymerization type, there is a certain amount of free methyl methacrylate (residual monomer) incorporated in the denture, which can cause irritation of the oral mucosa. The aim of this study was to determine the amount of resid...
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ژورنال
عنوان ژورنال: Hemijska industrija
سال: 2011
ISSN: 0367-598X,2217-7426
DOI: 10.2298/hemind101103008k