最近の軟質裏装材3種類の変色について

概要

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We conducted color stability tests on three new resilient lining materials for three months. These materials, Polyorefin, Silicone resilient materials and Polyphosphazine fluoroelastomer were immersed in four aqueous solutions and one oleaginous solution. The aqueoussolutions included saline, turmeric, instant coffee and red color No. 102. The oleaginous solution consisted of olive oil plus β-Carotene. The results were as follows : 1. Severe color change was observed in the Polyorefin resilient material immersed in the olive oil plus β-Carotene solution. 2. Although the Silicone resilient material immersed in the oleaginous solution changed moderately, severe color change was observed in the Silicone resilient material immersed in the turmeric and the instant coffee solutions. 3. The color change in Poryphosphazine fluoroelastomer was less than that of the other two materials except in the case of immersion in turmeric. These results suggested that the degree of color change depends on not only consistency of test solutions but also some physical properties, i. e. water absorption, solubility, swellings, and surface roughness.
日本補綴歯科学会の論文
1991-06-01