PMID: 11605485Oct 19, 2001Paper

Investigation of water sorption and solubility of three denture soft lining materials

Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi
J SunM Xue

Abstract

This assay was made to investigate the water sorption and solubility of autopolymerizing hydrogel, acrylic resin and silicone denture soft lining materials. The test discs with 50 mm in diameter and 1 mm in thickness were prepared according to powder and liquid ratio. The weight of sample was measured after 24 h drying (m1). The sample was put into artificial saliva and distilled water for 7 d and 28 d, the moisture weight was measured after soaking (m2). After drying again, the last data of weight (m3) was acquired till the constant mass was recorded. Finally the values of water sorption and water solubility were calculated respectively with statistical analysis. The results showed the means of percentage about absorption at 7 d and 28 d were 28.62% and 24.96% for hydrogel, 1.89% and 1.65% for acrylic resin, 0.25% and 0.29% for silicone in artificial saliva. The percentage solubility at two stages were 0.56% and 0.51% for hydrogel, 0.74% and 0.83% for acrylic resin, 0.10% and 0.12% for silicone. In distilled water, the means of percentage about absorption at 7 d and 28 d were 30.15% and 27.85% for hydrogel, 3.64% and 6.17% for acrylic resin, 0.83% and 0.98% for silicone. The percentage solubility at two stages were 0.79% and 1...Continue Reading

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