A technique was developed to qualify the masking power of undiluted opaque dental porcelain by dilution of opaque powder with a clear glaze powder and by extrapolation of quantitative data gathered by reflectance spectrophotometry. Quantification of reflectance data was made on dilute opaque porcelains using the scattering and absorption coefficients in the Kubelka-Munk equation. Qualitative co...

The Mesopotamian invention of suspended narratives in mineral pigment and glaze produced in the fifteen thousand year old ‘new technology’ of the ceramic tile sets the scene for my talk for EVA 2010 (and this published paper which is intended to act as a prologue to that talk). It was this invention, a mass-produced media technology with the limit of a prototype glass screen that allowed commen...

To study the effect of different cooling rates after glaze firing on Radius of radial crack, Fracture toughness and Microhardness of Alumina reinforced porcelain. Total 30 porcelain discs reinforced with aluminium oxide of 8mm diameter×0.6mmthickness were prepared. Specimens were divided into three groups, each group containing ten discs. They were positioned at the entrance of the furnace with...

Where and when glass production began is uncertain. It is thought by some that the first glass was probably developed in the Mitannian or Hurrian region of Mesopotamia, possibly as an extension of the production of glazes (*5000 BCE) [1]. Around this same time, a new material called faience was developed, which was produced by utilizing a variety of techniques to create a glaze layer over a sil...

OBJECTIVE This study tested whether the two-body wear of monolithic zirconia and their corresponding enamel antagonists was higher compared to monolithic alloy and veneered zirconia. MATERIALS AND METHODS Cylindrical specimens (N = 36, n = 6) were prepared out of (A) veneered zirconia (VZ), (B) glazed zirconia using a glaze ceramic (GZC), (C) glazed zirconia using a glaze spray (GZS), (D) man...

Abstract This study identified the provenance of Pb flux used in production glaze unique, high‐quality late medieval stove tiles from northern part Carpathian Basin, and elaborated evaluated a fast preparation process to measure isotope ratios high‐Pb glazes. We compared three different methods preparation. Method 1 consisted dissolution bulk chips glaze, dilution solution mass spectrometric an...

PURPOSE Surface color is one of the main criteria to obtain an ideal esthetic. Many factors such as the type of the material, surface specifications, number of firings, firing temperature and thickness of the porcelain are all important to provide an unchanged surface color in dental ceramics. The aim of this study was to evaluate the color changes in dental ceramics according to the material t...