Flexural properties of a light-cure and a self-cure denture base materials compared to conventional alternatives

Abstract

PURPOSEA new light curing urethane dimethacrylate and a cold curing resin with simpler and faster laboratory procedures may have even improved flexural properties. This study investigated the 3-point flexural strengths and flexural moduli of two alternate base materials.MATERIALS AND METHODSA cold curing resin (Weropress) and a light curing urethane dimethacrylate base material (Eclipse). Along with Eclipse and Weropress, a high impact resin (Lucitone199) and three conventional base materials (QC 20, Meliodent and Paladent 20) were tested. A 3-point bending test was used to determine the flexural strengths and flexural moduli. The mean displacement, maximum load, flexural modulus and flexural strength values and standard deviations for each group were analyzed by means of one-way analysis of variance (ANOVA) (with mean difference significant at the 0.05 level). Post hoc analyses (Scheffe test) were carried out to determine the differences between the groups at a confidence level of 95%.RESULTSFlexural strength, displacement and force maximum load values of Eclipse were significantly different from other base materials. Displacement values of QC 20 were significantly different from Lucitone 199 and Weropress.CONCLUSIONThe flexural properties and simpler processing technique of Eclipse system presents an advantageous alternative to conventional base resins and Weropress offers another simple laboratory technique.

EVALUATION OF A NEWLY FORMULATED AUTOPOLYMERIZED ACRYLIC RESIN PERMANENT DENTURE BASE MATERIAL (In Vitro Study)

“…This increase could be attributed to high amount of residual monomer which acts as plasticizer which reduce the polymer inter-chain forces and reduce the glass transition temperature which render the resin softer and more flexible (28). Our finding was in agreement with Mumcu et al (29) in 2011.…”

Comparative analysis of denture base adaptation performance between pour and other conventional fabrication techniques

“…19,20 Denture processing techniques have been developed to decrease these distortions while enhancing productivity of the dental laboratory. Previous studies 2,21,22 evaluated the flexural strength of denture base materials, and Eclipse showed the highest mean flexural strength values, which may be a useful alternative to conventional denture base resins. Those studies differed from the present study in the test method and materials evaluated.…”

Influence of Different Repair Acrylic Resin and Thermocycling on the Flexural Strength of Denture Base Resin

“…The prepared samples were randomly divided into four groups (n = 10). Based on previously published studies [27,28], effect size (d) 1.6, α at 0.05, and 1-β (power) at 0.9 the sample size was determined to be 10 per sub-group, resulting in a total of 40 specimens per group. The sample size was calculated with the G*Power software (version 3.1; University of Dusseldorf) [29].…”