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Year : 2017  |  Volume : 4  |  Issue : 1  |  Page : 9-12

Comparative evaluation of flexural strength of conventional and reinforced heat cure acrylic resins: An In vitro study

1 Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
2 Department of Prosthodontics, Drs. Sudha and Nageswararao Institute of Dental Sciences, Krishna, Andhra Pradesh, India

Correspondence Address:
Ravikanth Anne
SF-3, AGS Towers, Srinivasa Nagar Bank Colony, Vijayawada - 520 008, Andhra Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jdrr.jdrr_7_17

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Aim: The aim is to comparatively evaluate flexural strengths (FSs) of conventional and various types of reinforced heat cure acrylic resins. Objectives: To determine the FS of conventional (polymethylmethacrylate [PMMA]) denture base material and reinforced resins by the addition of 2% by weight glass fibers and metal mesh reinforcement, respectively. Materials and Methods: A total of 30 specimens of similar dimensions were prepared for each of the three experimental groups: conventional acrylic resin and the same resin reinforced with glass fibers and with metal mesh. FS was evaluated with a three-point bending test. The results were analyzed with a one-way analysis of variance. Results: All reinforced specimens showed better FS than the conventional acrylic resin. Specimens reinforced with metal mesh showed the highest FS, followed by glass fibers. Conclusion: Within the limitations of this study, the FS of heat-polymerized PMMA denture resin was improved after reinforcement with glass fibers and metal mesh.

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