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Disentangling High Strength Copolymer Aramid Fibers to Enable the Determination of Their Mechanical Properties
Published on: September 1, 2018
Additive effect of polyethylene-polypropylene fibers in heat-cure acrylic resin flexural strength
Bodduluri Manisha1, Ravi Kumar C1, Sujesh M1
1Department of Prosthodontics and crown and bridge, Mamata Dental College and hospital, khammam, Telangana, India.
Abstract:
Although it lacks sufficient flexural strength, polymethyl methacrylate (PMMA) finds extensive application as a foundation material for dentures. Flexural strength of heat-cured PMMA was examined in an in vitro experiment by adding polyethylene and polypropylene fibers. An evaluation was conducted on 120 controlled specimens by means of a three-point bending test. Results showed significant improvement with both fibers, with polypropylene (169.61 ± 16.30 MPa) providing superior reinforcement compared to polyethylene (129.29 ± 5.00 MPa) and control (99.91 ± 3.79 MPa) (p < 0.001). Based on these results, reinforcing PMMA dentures with polypropylene fibers is a good way to increase their mechanical performance and lifespan.
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