Síntese de cargas nanoestruturadas com propriedades radiopacas, obtidas por meio de métodos químico e físico, para aplicação odontológica

Abstract

Nanomaterials are materials that have structural degrees in the order of 10-9 m or one nanometer, which is equal to one millionth of a millimeter or one billionth of a meter. Have special properties because of their nanoscale and are used in nanotechnology projects. The nanomaterials may vary in size, chemical composition, shape and surface. The study of control, manipulation and phenomena of matter at the nanoscale, whose properties differ from those observed in larger scale, are goals of nanoscience and nanotechnology. Nanocomposites are materials formed by joining two or more components, and in one of them, its particles have dimensions in the order of nanometers. These dimensions turn better he interaction between the particle and the environment, greatly improving some properties of the nanocomposite material in relation to he pure component. In this work was developed a nanoscale material, in which oxyanions silicon chelates Yb3 + in a polymeric matrix based on polyester, as well as using a physical method, based on the milling of mechanics high-energy. The structural analysis of nanoparticles was performed by X-ray (XRD) diffraction. The microstructural morphology of the samples was studied by Scanning Electron Microscopy (SEM). Additionally, the effect of high energy milling was also investigated through the analysis of specific surface area of nanocomposites. The chemical concentration of all samples used as charged particles were determined by X-ray (EDX) dispersive energy. In this process, the nanostructured ceramic powder has been functionalized with various resins and adhesive restorations (material applied to the dental sector). The homogeneity of the powder (nanoparticles) plays a crucial role in optical applications. This nanoparticle is applied as transparent loading material and radiopaque. The radiopacity is an important property in this biomaterial since it allows the ownership/location in the X-rays explorations. The incorporation of inorganic particles is well established as a mechanism for reinforcing materials of polymer-based, so these studies were also performed, as the addition of nanoparticles in polymer matrix improved the mechanical properties of the resulting nanocomposites. The nanocomposites synthesized with radiopaque properties are particularly attractive for materials used in the restoration of dental resins, so the adhesive layer will not be confused with recurrent decay or crack, leading to an unnecessary removal of the restorative material.