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Published on: January 17, 2025
Elastic modulus and flexural strength comparisons of high-impact and traditional denture base acrylic resins
Nour M Ajaj-Alkordy1, Mohannad H Alsaadi1
1Department of Removable Prosthodontics, Faculty of Dental Medicine, Damascus University, Syria.
Background:
Fractures of acrylic resin dentures are a common occurrence in clinical dentistry. The denture may be fractured accidentally when dropped or while in service in the mouth due to flexural fatigue.
Objectives:
The aim of this study was to compare the elastic modulus and the flexural strength between two heat-cured acrylic resins used in denture bases: a high-impact resin (Lucitone 199) and a traditional resin (Rodex).
Materials And Methods:
Rectangular strips of Lucitone 199 and Rodex (10 samples each) were fabricated and stored in artificial saliva at 37 °C for 2 weeks. The specimens were subjected to a three-point flexural test. The data were statistically analysed with Student's t-test (p ⩽ .05).
Results:
The high-impact acrylic resin had a lower elastic modulus (p = .000) and higher flexural strength (p = .001) compared to the traditional acrylic resin.
Conclusion:
Within the limitations of this study, it can be concluded that the high-impact acrylic resin is a suitable denture base material for patients with clinical fracture of the acrylic denture.
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