Adding Silanes to MMA : The Effects on the Water Absortion, Adhesive Strength and Mechanical Properties of Acrylic Denture Base Resins

概要

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The adhesive strength of porcelain artificial teeth and polymethlylmethacrylates(PMMAs), which contained silanes with various number of vinyl or ethoxy groups, and the mechanical and physical properties of the PMMAs were measured.Four types of PMMAs with silanes showed high adhesive shear strength and caused fractures in the porcelain.Water absorption of the PMMAs increased with the addition of silane, but that of one type with silane was almost the same as the PMMA only type.The flexural strengths of the PMMAs with silane, except for one type, showed no significant differences compared with that of PMMA(p<0.05>.The Tg levels of all PMMAs with silane fell less than that of PMMA.From these results, it was found that PMMA with silane from three vinyl groups and one ethoxy group showed excellent chemical bonding to porcelain and low water absorption.
日本歯科理工学会の論文