Results 241 to 250 of about 23,824 (283)

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

Synthesis and Formulation of Zinc-strengthened Calcium Phosphate Polycarboxylate Cements

Journal of Composite Materials, 2006
A novel zinc-strengthened calcium phosphate polycarboxylate cement modified with amino acid has been developed. Synthesis of glass fillers and monomers as well as polymers and formulation of the cements are described. The effects of silanization, sintering, glass composition, grafting ratio of the methacrylate groups, molecular weight, tartaric acid ...
Guigui Wang, Dong Xie, Ildoo Chung
openaire   +2 more sources

Encapsulated verses hand-mixed zinc phosphate dental cement

Biomaterials, 1999
Zinc phosphate cements are commonly supplied as two components, powder and liquid, and the proportions of the constituents are determined by operator experience. A capsulated system which is mechanically mixed has been marketed and this study investigated the performance of the encapsulated cement system.
Garry J.P. Fleming, Peter M. Marquis, Adrian C. Shortall, Richard M. Shelton   +3 more
openaire   +3 more sources

Physical Properties of Zinc Phosphate Cement Prepared on a Frozen Slab

Journal of Dental Research, 1978
The physical properties of a zinc phosphate cement prepared on a room temperature slab were compared to those of the cement prepared on a frozen slab. Solubility, compressive strength, and setting time of cements prepared on both types of slabs were within the limits set by A.D.A. Specification No. 8.
Ivens A. Siegel, Rodney Tuenge, Kenneth T. Izutsu   +2 more
openaire   +2 more sources

Rapid mixing of zinc phosphate cement for fixed prosthodontic procedures

The Journal of Prosthetic Dentistry, 1992
This study was done to determine the efficacy of rapidly mixing zinc phosphate cement in conjunction with fixed prosthodontic procedures. Properties measured included rate of pH change and temperature increase, film thickness, and setting time. The rapid mix technique in conjunction with the frozen glass slab resulted in a faster elevation of the pH ...
Zaki A. Fakiha, Leonard A. Mueninghoff, Karl F. Leinfelder   +2 more
openaire   +3 more sources

Heat treatment of glass ionomer, silicate, zinc phosphate and zinc polycarboxylate cements

European Journal of Oral Sciences, 1982
Abstract – The compressive strength and erosion resistance of glass ionomer, silicate, zinc phosphate or zinc polycarboxylate cements, submitted to heat treatments at 50° or 70°C after mixing, have been assessed. Zinc phosphate cement specimens showed a marked reduction in compressive strength properties and erosion resistance, while minor ...
openaire   +2 more sources

Effects of a 36% tooth bleaching gel on zinc phosphate cement

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2009
AbstractPurpose: To assess the effect of a 36% hydrogen peroxide bleaching gel on the roughness, microhardness, indentation modulus, and micromorphology of zinc phosphate cement aged 24 h or 1 week, compared to cement not exposed to bleaching gel. Methods: Dynamic indentation was performed for microhardness and indentation modulus. Contact profilometry
Daniel W. Boston, Steven R. Jefferies
openaire   +3 more sources

A comparison between zinc phosphate and glass ionomer cement in orthodontics

American Journal of Orthodontics and Dentofacial Orthopedics, 1988
In the past orthodontic band cementation has relied heavily on mechanically retentive cements such as zinc phosphate luting agents. The clinical performance of a glass ionomer cement (GIC), a chemically retentive cement, was evaluated against a conventional zinc phosphate cement (ZP).
Rolf Maijer, Dennis C. Smith
openaire   +2 more sources

Study on the Porosity in thin Films of Zinc Phosphate Cement

Acta Odontologica Scandinavica, 1966
(1966). Study on the Porosity in thin Films of Zinc Phosphate Cement. Acta Odontologica Scandinavica: Vol. 24, No. 1, pp. 35-46.
openaire   +2 more sources