Asunto(s)
Antibacterianos/química , Materiales Biocompatibles/química , Cerámica/química , Materiales Dentales/química , Geles/química , Povidona/química , Nitrato de Plata/química , Materiales Biocompatibles/metabolismo , Cerámica/metabolismo , Materiales Dentales/metabolismo , Durapatita/química , Geles/metabolismo , Calor , Humanos , Ensayo de Materiales , Fenómenos Mecánicos , Nanoestructuras/química , Porosidad , Povidona/metabolismo , Propiedades de SuperficieRESUMEN
The titanium opaque porcelain was synthesized through sol-gel using borate-silicate system. The porcelain was characterized by DSC-TG, X-ray diffraction, N2 adsorption-desorption isotherms and scanning electron microscope tests. The results of DSC showed that the nitrates could be decomposed completely when the bioglass xerogel precursor was heat-treated at 760â¯â. The XRD results showed that the Na2Ca3Si6O16 was the major phase of the opaque porcelain. The synthesized opaque porcelain powders had an average particle size of about 5-25⯵m with nanopores of around 50-70â¯nm on the surface. The BET average surface area of the porcelain was 12.67â¯m2/g, while the average pore diameters for adsorption and desorption were 9.73 and 10.16â¯nm, respectively. The flexure strength significantly increased from 47.4â¯MPa to 116.2â¯MPa with the sintering temperature increasing from 575â¯â to 600â¯â. The XRD, FTIR and EDS results proved that hydroxyapatite had formed on the porcelain surface after incubation in simulated body fluid.