36 th Annual Congress EPA European Prosthodontic Association, Netherlands, pp.104
Purpose: The purpose of this in vitro study was to investigate the flexural properties of a recently
introduced urethane dimethacrylate denture base material (Eclipse) after being repaired with two
Materials and Methods: Two repair groups and a control group were generated. The ES group was
repaired with auto-polymerizing polymer. The EE group was repaired with the Eclipse. The E group was
left intact as a control group. A 3-point bending test device which was set to travel at a crosshead speed
of 5 mm/min was used. Specimens were loaded until fracture occurred and the mean displacement,
maximum load, flexural modulus and flexural strength values and standard deviations were calculated
for each group.
Results: The mean “displacement”, “maximum load before fracture”, flexural strength” and “flexural
modulus” rates of the Group E were statistically significant higher than the Groups ES and EE (p<0.01),
but no significant difference (p>0.05) was found between the mean values of Group ES and EE. There
was a statistically significant positive relation (p<0.01) between the displacement and maximum load of
Group ES (99.5%), Group EE (94.3%) and Group E (84.4%).
Conclusion: The more economic and commonly used self curing acrylic resin can be recommended as
an alternative repair material for Eclipse denture bases.