Effects of Stainless Steel Fillers on the Properties of Polycarboxylate Cement

作者：D. Brown, Edward C. Combe · 发表于：Journal of Dental Research · 年份：1973 · DOI：10.1177/00220345730520023601 · 被引用次数：9 · 研究领域：Dental materials and restorations、Dental Implant Techniques and Outcomes、Dental Radiography and Imaging

I box pos to-a tempts have been made to improve the diametral compression test. chanical properties of a polycarboxylate The powder additive was a -200 mesh type nent by incorporation of various forms of 31 6L, annealed stainless steel. From a type inless steel as filler. Stainless steel was EN58 stainless steel, annealed, oxideand :sen for the initial experiments because of grease-free, electropolished fibers 1 to 2 mm ability to form an adhesive bond with this long and 0.05 mm in diameter were prepared. 'e of cement (MAZRAHI and SMITH, Br Dent The polycarboxylate cement liquid was a 42% 127:371, 1969). Two sets of experiments aqueous solution of polyacrylic acid of averve been done (BROWN and COMBE, J Dent age molecular weight (about 45,000). The s 50:190, 1971): the effect of a stainless powder was heat-treated zinc oxide. el powder on the resistance of the composite Results are shown in Figures 1 and 2. For compressive loads and the effect of fibers any zinc oxide-liquid ratio, an increase in the tensile strength, as measured by the compressive or tensile strength can be obtained if powder or fibers, respectively, are receive for publication May 20, 1972. incorporated. Lawrence and Smith (IADR Program and Abstracts of Papers, No. 382, 1972) recently reported a similar increase in 90% /8% tensile strength with the incorporation of 80 6/50% stainless steel fibers. 80 25% It is believed, however, that the mechanism of reinforcement of this material is not simi/o% lar to the ...