Results 241 to 250 of about 51,800 (290)

Laboratory strength of glass ionomer and zinc phosphate cements

Journal of Prosthodontics, 2001
Purpose The present in vitro study examined 3 mechanical properties, namely compressive, flexural, and diametral tensile strength, of various commercially available cements and core materials as a function of time after mixing.Materials and Methods The examined materials were 2 cermet cements (Ketac Silver [ESPE, Seefeld, Germany] and Chelon Silver ...
Hans-Christoph Lauer, Andree Piwowarczyk, Peter Ottl   +2 more
openaire   +3 more sources

Aspects of the chemistry of zinc phosphate cements

Australian Dental Journal, 1984
Abstract— Consideration of the ZnO‐P2O5‐H2O constitutional diagram gives some insights into the setting reaction of dental zinc phosphate cements, and clarifies the requirements of acid concentrations and clinical mixing procedure.
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Physical Properties of Some Zinc Phosphate and Polycarboxylate Cements

Acta Odontologica Scandinavica, 1983
Several physical properties were measured for two zinc phosphate and three polycarboxylate cements. The specimens were tested in compression 24 h after they had been made. Two series of specimens were examined. In one series the cement powders were given a correct treatment, protected from atmospheric humidity.
Trond Hegdahl, Rogério Branco
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Zinc Phosphate Cements: Chemical Study of In Vitro Durability

Journal of Dental Research, 1970
This study of the variation in chemical composition of material eroded from zinc phosphate cements in aqueous mediums establishes the effects of preparative variables and pH.
Alan D. Wilson, Brian G. Lewis, Brian E. Kent   +2 more
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Enamel Corrosion Produced by Zinc Phosphate Dental Cement

Journal of Dental Research, 1976
The surface of tooth enamel that had been left in contact with a phosphoric acid solution or a zinc phosphate cement mix was studied by scanning electron microscopy. Both treatments modified enamel surface topography. The modifications were represented by cavities of varying extension and depth.
Lucía M. Ribas, Abraham Abramovich, Ricardo L. Macchi   +2 more
openaire   +3 more sources

Addition of amalgam alloy to zinc phosphate cement

The Journal of Prosthetic Dentistry, 1962
Abstract It was the purpose of this investigation to evaluate the procedure of adding amalgam alloy to zinc phosphate cement. Strength, solubility, disintegration, and adhesion to dentin were investigated.
George K. Armen, David B. Mahler
openaire   +2 more sources

Zinc-releasing calcium phosphate cements for bone substitute materials

Ceramics International, 2016
The goal of the present study was to develop zinc-doped calcium phosphate bone cements (CPCs-Zn) for functionalized bone grafts applications. An aqueous co-precipitation process for synthesis of ?-tricalcium phosphate (?-TCP) powder samples with Zn addition ranging from 0. wt% up to 1.2.
GRAZIANI, VALERIO, FOSCA, MARCO, Egorov, A. A., Zobkov, Y.u. V., Fedotov, A. Y.u., Baranchikov, A. E., Ortenzi, M., CAMINITI, Ruggero, Komlev, V. S, Rau, J. V.   +9 more
openaire   +4 more sources

Elements in minor or trace quantities in zinc phosphate cements

European Journal of Oral Sciences, 1979
Abstract – Eight powders and two liquids of zinc phosphate cements have been analyzed by optical emission spectrography for the purpose of characterizing elements in minor or trace quantities. The following elements were measured: bismuth, boron, cadmium, chromium, copper, iron, lead, silver and titanium.
openaire   +3 more sources

The effective minimum cement thickness of zinc phosphate cement for luted non-precious crowns.

Journal of Oral Rehabilitation, 1985
Non-precious metal crowns were prepared for natural teeth which were ground to a taper angle of 5 degrees. The movement of the crowns on teeth during repeated try-on seating was measured with a micrometer.
R. Grajower, I. Lewinstein, C. Zeltser
semanticscholar   +1 more source

Evaluation of several protocols for the application of ultrasound during the removal of cast intraradicular posts cemented with zinc phosphate cement.

International Endodontic Journal, 2009
AIM To evaluate several protocols for the application of ultrasound during removal of cast posts with varying core configurations cemented with zinc phosphate.
A. D. B. Garrido, A. G. Oliveira, J. E. V. Osório, Y. Silva-Sousa, M. D. Sousa-Neto   +4 more
semanticscholar   +1 more source