軟性裏装材の緩圧効果に関する研究 : 第1報平行板実験

概要

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Many of soft lining materials are available at present, but they are different from each other in physical and mechanical properties.In order to examine the feasibility of soft lining materials, properties of the materials were examined through static creep test and pressure distribution for typical materials which are applied treatments when a compressive stress of 0.5kg/cm^2 was applied. The results were as follows : 1) The variation of pressures between measurement points was decreased if the tested materials, which were mixed for three hours, were contained between plates. 2) The tested materials were classified into two groups according to the instantaneous elasticity. Group A has 2.0〜4.0×10^6 dyne/cm^2 and group B has 6.0〜7.0×10^6 dyne/cm^2. The variation of pressures between measurement points of group A was smaller than that of group B. 3) The variation of pressures between measurement points of group A was decreased when the specimen was thick. On the other hand, that of group B did not change with thickness ofspecimen. 4) The variation of pressures between measurement points of Visco-gel and Coe-comfort was decreased with time dependency. On the other hand, that of Hydro-cast and Softone was increased.
社団法人日本補綴歯科学会の論文
1988-12-01