Results 211 to 220 of about 42,346 (267)
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Spheroidization of glass powders for glass ionomer cements
Biomaterials, 2004Commercial angular glass powders were spheroidized using both the flame spraying and inductively coupled radio frequency plasma spraying techniques. Spherical powders with different particle size distributions were obtained after spheroidization. The effects of spherical glass powders on the mechanical properties of glass ionomer cements (GICs) were ...
Gu, Y.W. +3 more
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Opacity of glass-ionomer cements
Acta Odontologica Scandinavica, 1983The translucency of the first generation of glass-ionomer cements to appear on the market was too low to be cosmetically satisfactory. In the present study the opacity of newer editions of glass-ionomer cements was evaluated and compared with that of a well-known composite resin.
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Finishing and polishing glass-ionomer cements
Acta Odontologica Scandinavica, 1990Four different methods for finishing and polishing the surfaces of two different glass-ionomer cements were studied by measuring the roughness of specimens at different stages of the procedures. Method 1 consisted of the four 3M Sof-Lex XT discs. Method 2 included a round, fine-grit diamond and the Vivadent polisher.
Anne Bjørg Tveit, Rune Eide
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Dowel retention with glass-ionomer cement
The Journal of Prosthetic Dentistry, 1979The retentive capacity of the Whaledent Parapost system utilizing ASPA cement was compared at two lengths, three diameters, and with respect to the effect of both medication and citric acid pretreatment. The greatest single factor influencing retention was embedment depth into dentin.
J.D. Krupp +3 more
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Ion processes in glass ionomer cements
Journal of Dentistry, 2006Ion processes are involved in many aspects of glass-ionomer cements. The ions released from the glass take part in the formation of the cement matrix. Although this process has been investigated, particularly using model cement systems, no study provides a complete matrix composition.
Jill Ann Williams +2 more
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Glass ionomer cements and dental pulp
Dental Traumatology, 1991Abstract Only slight pulp reactions to glass ionomer cements occurred when inserted in Class V cavities of dog teeth. Most inflammatory reactions were due to bacteria at the tooth/filling interface. Special dentin reactions were noted in almost half the teeth, including hematoxyphilic bands in the dentin and a disturbance of the mineralization pattern ...
Leif Tronstad, I. Nordahl, I. A. Mjör
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Leaching from glass ionomer cements
Journal of Oral Rehabilitation, 1994SummaryThis study compared the electrical conductivities, pH and leached ion (F−, Ca, Al, Si) concentrations in supernatant liquids obtained from four glassionomer cements, a buffered ionomer cement, a polycarboxylate cement and a zinc phosphate cement, at three different levels of settings. The result indicated that the measured parameters are highest
M.S. Bapna, H.J. Mueller
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Glass ionomer cements: dispensing and strength
Australian Dental Journal, 1985Abstract— The use of the powder and liquid dispensers provided by the manufacturers to achieve an optimal mix of glass ionomer cement was examined. The dispensers should be regarded only as an approximate guide to the ratio of powder and liquid required.
Theresa C. C. Wong, Roland W. Bryant
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Glass polyalkenoate (glass-ionomer) cements: a review
Journal of Dentistry, 1986Abstract This paper reviews the history and development of glass polyalkenoate (glass-ionomer) cements from their inception at the Laboratory of the Government Chemist during the 1960s to the present day.
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Biological Evaluation on Glass Ionomer Cement
Journal of Dental Research, 1979Biological properties of a new dental cement of glass ionomer cement were compared with other types of conventional cement. The biological test was carried out by tissue culture method and animal examination. The culture cells showed weaker reaction to the glass ionomer cement than zinc oxide-eugenol or polycarboxylate cement.
Hiroshi Oshima +2 more
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