Results 261 to 270 of about 638,404 (342)
The endurance limit of dental porcelain* [PDF]
Australian Dental Journal, 1974 Abstract— Dental porcelain is subject to static fatigue and has an endurance limit to stress. There is great variation to subdestructive loading above that limit. Its reliability necessitates stress be kept below that limit but chemical treatment can raise the endurance limit.
Knud Dreyer Jørgensen, David E. Southan
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Fluorescence of dental porcelain
The Journal of Prosthetic Dentistry, 1993This study of the fluorescence of natural enamel and of dental ceramics shows the fluorescence of ceramics not containing rare earths decreases when the color saturation increases; the fluorescence of samples of the same shade guide are not homogenous; some guides show a strong green fluorescence; and two shade guides of the same origin can present ...
Gérald Burdairon +2 more
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Mica leucite dental porcelain [PDF]
British Ceramic Transactions, 2001 AbstractThree formulations of fluorophlogopite and orthoclase (4 : 1, 1 : 1, and 1 : 4 molar mixes, based on the stoichiometric composition) were prepared utilising local potash feldspar, as the main constituent for dental porcelain containing leucite and fluorophlogopite. Powders of the fritted batches were heat treated for 2 h at between 950 and 1050°
D.M. Ibrahim, E.A. El-Meliegy
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Surface finishing of dental porcelain
The Journal of Prosthetic Dentistry, 1981Abstract A technique is presented to polish a porcelain surface whose natural glaze has been broken by grinding. The technique involves the use of a hard rubber wheel, fine wet pumice, and wet tin oxide. A comparison of the polished and naturally glazed porcelain surfaces of vacuum-fired porcelain appear similar both clinically and under an SEM.
Edward J. Plekavich +3 more
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Luminescence Spectra of Dental Porcelains
Journal of Dental Research, 1978The luminescence spectra were obtained for a series of porcelain teeth and powders currently used in this country. Comparison was made between the spectra of these materials and the spectra of plastic teeth and natural tooth structures. It was found that many of the porcelain teeth and powders have strikingly different luminescence characteristics ...
B.K. Moore, W.T. Wozniak
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Effect of silica coating on the bond strength of milled pure titanium to dental porcelain.
European Journal of Oral Sciences, 2016The creation of a high bond strength between machined computer-manufactured pure titanium and porcelain remains problematic, and the effects of a silica coating on the bond strength of milled pure titanium bonded to dental porcelain require further ...
J. Ye +5 more
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Evaluation of an experimental dental porcelain
Journal of the Mechanical Behavior of Biomedical Materials, 2010The aim of this study was to evaluate fracture toughness, hardness, ceramic/metal bond strength and microstructure of experimental dental porcelain and compare it with commercial type. Specimens of specific dimensions were prepared. Fracture toughness was assessed by a three-point bending test.
Abeer A. El-Falal +3 more
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Journal of Prosthodontics, 2014
PURPOSE This study evaluated the adherence of dental porcelain to a milled, noncast titanium (Ti) surface with a gold sputter coating to evaluate a possible new practical surface treatment for enhancing the bond strength between Ti and porcelain ...
Mau-Chin Lin, Her-Hsiung Huang
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PURPOSE This study evaluated the adherence of dental porcelain to a milled, noncast titanium (Ti) surface with a gold sputter coating to evaluate a possible new practical surface treatment for enhancing the bond strength between Ti and porcelain ...
Mau-Chin Lin, Her-Hsiung Huang
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The effect of abrasive blasting on the strength of a joint between dental porcelain and metal base.
Acta of Bioengineering and Biomechanics, 2014This paper presents the effect of selected parameters of abrasive blasting on the strength of a joint between dental porcelain and metal base. Experiments were conducted for different grain sizes of abrasive material and different blasting angles, with a
K. Pietnicki, E. Wolowiec, L. Klimek
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