|
This stydy was designed to evaluate the effect of processing method and surface design on the transverse strenght of repaired denture base resin. Three heat-cured denture base resins(Vertex, Lucitone, Lang), one cold-cured resin(Lang), and on light-cured resin(Dentacolor gingiva material) were used for repair purpose. The specimens for 3-point flexure test were fabricated by five processing methods such as self-curing, pressure pot, boiling water, processing, and light curing. Finally to evaluate the effect of surface designs for repaired resin, three surface designs(butt, bevel, inverse bevel) were tested. Within the limit of this stydy, following conclusions were drawn. 1. Lucitone denture base material showed highest flexural strength of 131.37±2.15㎫, and there were significant differences in stength between Lucitone and other resins. 2. Between two different self curing methods, self curing repair resin, Lang, cured by pressure pot method showed highest flexural strength, 58.49±4.89㎫. 3. Among the heat cured repair resins, maximum transverse strength value of 88.69±16.60㎫ was recorded in Lucitone group cured by processing method. 4. Inverse bevel joint design showed significantly higher bond strength than butt joint group, Maximum bond strength was 59.36±1.33㎫ in inverse bevel joint design group.
|