Results 161 to 170 of about 266,361 (221)
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Influence of cryolite on the properties of polycarboxylate cement
The Journal of Prosthetic Dentistry, 1995Zinc oxide, the inorganic component of polycarboxylate cement, was mixed with the filler cryolite (Na3A1F6) in various proportions that ranged from 10% to 50%. These powder combinations were mixed with polyacrylic acid in three powder-to-liquid ratios of 1:1, 1.5:1, and 2:1 (w/w).
R K, Bansal +3 more
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Influence of talc on the properties of polycarboxylate cement
Journal of Oral Rehabilitation, 1997summary Zinc oxide, the inorganic component of polycarboxylate cement, was mixed with talc in various proportions from 10% to 50%. These powder mixtures were spatulated with poly(acrylic acid) in three powder to liquid (P/L) ratios of 1:1, 1‐5:1 and 2:1 (w/w).
R K, Bansal +3 more
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Punch shear strength of polycarboxylate cements
The Journal of Prosthetic Dentistry, 1978Two general conclusions are drawn which apply to all the four commercial polycarboxylate cements: First, the effect of storage condition upon shear strength was much more pronounced after 24 hours than after 1 hour of storage time; second, the effect of storage condition was most extreme when the specimens were tested free of their matrices ...
J F, Santos, L, Steagall, J I, Silveira
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Studies on polycarboxylates and related cements 4. Properties of cements
Journal of Dentistry, 1979Abstract The mechanical properties, setting times, apparent pH of setting cements, solubility, film thickness and adhesion to enamel and dentine have been determined for a range of zinc polycarboxylate cements. The properties are discussed in relation to the suitability of the cements as linings and luting agents.
B W, Bertenshaw, E C, Combe, A A, Grant
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Sealing quality of instruments cemented in root canals with polycarboxylate cements
Journal of Endodontics, 1975Stainless steel files were cemented in place as the master cone with Durelon, PCA, and Proco-sol. The treated teeth were immersed in, dye; after 2, 4, 8, and 16 days, they were examined for evidence of dye penetration. The depth of dye penetration for each group was compared with the use of the t test.
G N, Barry, R A, Heyman, I L, Fried
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Effect of manipulative variables on the properties of a polycarboxylate cement*
Australian Dental Journal, 1975Abstract— Strength and film thickness increased in polycarboxylate cement as the powder liquid ratio is increased and there is a tendency to reduction in adhesion which was more marked when cementation was delayed for three minutes with a 2:1 powder liquid ratio.
M C, Kafalias +2 more
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The nature of the zinc polycarboxylate cement matrix
Journal of Biomedical Materials Research, 1982AbstractThe matrix of a stoichiometric zinc polycarboxylate cement has been shown to be identical with zinc polycarboxylate salt, which consists principally of neutralized carboxylate groups with a few free acid groups. When excess zinc oxide is present, as in practical cements, there are no free acid groups present.
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Reinforced polycarboxylate cements.
Journal of dental research, 1975Mechanical properties of polycarboxylate cements are greatly improved by incorporation of high modulus fibers such as potassium titanate into acrylic-itaconic acid and acrylic-itaconic-acronitic acid copolymers. Other desirable properties of the cements are not changed by the addition of fibers.
J A, Barton +3 more
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Application of polycarboxylate in low cement castables
Materials Research Innovations, 2015The performance of low cement castable with polycarboxylate was studied by comparing the effects of polycarboxylate superplasticisers KS-JS70 and LMS-P and sodium tripolyphosphate on castable samples. The fluidity, bulk density, apparent porosity, compressive strength and bending strength of the castable samples at room temperature were determined, and
T. S. He, Z. K. Li
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The rheological properties of polyelectrolyte cements
Journal of Oral Rehabilitation, 1981SummaryThe rheological behaviour of six setting carboxylate cements was studied by capillary techniques in the shear rate of 0.65–65 s−1 and the cements were found to behave as power law fluids. All cements became dilatant as setting progressed and the kinetics of apparent viscosity increase, were found to follow an exponential function of time, exp ...
Combe, E.C. +2 more
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