The shear bond strength of composite resin to porcelain was investigated to optimize variables for bonding porcelain laminate veneers. Scanning electron microscopy was initially used to examine the surface configuration of porcelain prepared under various conditions. A factorial experiment was undertaken to determine the effects of three different bonding methods on both etched and non-etched p...

Saliva is a watery substance located in the mouths of organisms, secreted by the salivary glands. Human saliva is composed of 99.5% water, while the other 0.5% consists of electrolytes, mucus, glycoproteins, enzymes, and antibacterial compounds. An antibiotic is any substance that delays with the ability of bacteria to function normally. It may either inhibit their growth or kill the bacteria. ...

The fluorescence of porcelain crowns recovered from the mouth of an unknown murder victim, and several control porcelain samples, were examined by fluorescent examination lamps. The fluorescence from two of the control samples was quite similar to that from the porcelain crowns recovered from the victim. To increase the objectivity of the results by quantitative analysis, the composition of eac...

Jacket crowns, metal-bonded porcelain crowns and bridges, made by vacuumfiring dental porcelain, have been considered comparatively stable in the oral cavity. In clinical practice, however, stains, slight surface roughness or abraison are sometimes observed on porcelain prosthetic appliances that have been retained for a long time. But studies related to the durability of such porcelain prosthe...

The differentiation of porcelain from tooh using fluorescence emission was investigated as a basic research for the visual detection of porcelain-restored teeth in mass dental health examinations. The fluorescence spectra were taken from the extracted human maxillary central incisors and five types of porcelain by excitation using the light 380-470 nm. There was a clear difference in fluorescen...

Objective:This study investigated the cervicalmicroleakage between titanium and three porcelain systems. Material andMethods:The titanium used in this study (commercially pure, grade 2, IMNR Bucharest, Romania) was veneered with three porcelain systems specially designed for fusing on titanium: Ti22 (Noritake, Nishikamogun, Aichi, Japan), Triceram (Esprident, Ispringen, Germany) andVitatitanker...

OBJECTIVES To assess the effect of interfacial surface roughness on the flexure strength and fracture mode and origin utilizing an in-vitro assessment of the clinical failure conditions expected for all-ceramic crowns and the connector area of fixed partial dentures (FPDs) using bilayered ceramic specimens tested in bi-axial flexure. METHODS Sets of 20 bilayered composite discs, with core:den...

OBJECTIVE This study evaluated the influence of porcelain (VM9, VITA Zahnfabrik, Germany) thickness on the flexural strength and crack propagation in bilayered zirconia systems (YZ, VITA Zahnfabrik, Germany). MATERIAL AND METHODS Thirty zirconia bars (20.0x4.0x1.0 mm) and six zirconia blocks (12.0x7.5x1.2 mm) were prepared and veneered with porcelain with different thickness: 1 mm, 2 mm, or 3...

The royal porcelain manufactories in eighteenth-century Continental Europe were sites of production that implemented chemistry in three different areas: manufacture of porcelain paste, preparation of pigments for ornamenting porcelain, and construction of furnace along with choice of fuel for firing porcelain. This paper provides evidence for the Royal Prussian Porcelain Manufactory in Berlin b...