Influence of water immersion on the transmitted load of home reliners.

This study aimed to clarify how composition and water immersion of home reliners affect the attenuation of the transmitted load. To conduct a transmitted load measurement, we used three different home reliners (Tafugurippu Pink A, Liodent Pink, and Cushion Correct), which were combined acrylic resin disks. They were immersed in distilled water and then placed on a silicone quasi-mucosa (φ20×1.5 mm), which was set on a pressure sensor (φ8×0.35 mm), followed by the application of static load. Subsequently, gel permeation chromatography (GPC) and gas chromatography (GC) were used to clarify the composition of each home reliner. The attenuation of the transmitted load began 3 h after immersion. Moreover, both GPC and GC revealed a difference in composition among the three products. Further, the difference in the vinyl acetate molecular weight distribution and ethyl alcohol content affected the attenuation of the transmitted load of home reliners after water absorption.