Effect of Molding Technique on Iwo Physical Properties of Acrylic Resin Specimens.

Abstract

The aim of this study was to compare dimensional changes and flexural strength of specimens processed by conventional and injection-molding techniques. SR-Ivocap Triplex Hot Resin was used for conventional pressure-packed, and SR-Ivocap High Impact was used for injection-molding techniques. Measurements were recorded at 24-hour, 48-hour and 12-day intervals. Three-point test and statistical analysis were carried out. After each water storage period, the acrylic specimens produced by injection method exhibited less dimensional change compared to those produced by the conventional technique. Within the limitation of this study, dimensional changes and flexural strength of acrylic resin specimens were influenced by molding technique, and the SR-Ivocap injection procedure exhibited higher dimensional accuracy and flexural strength compared to conventional molding.