Effect of polyester fiber reinforcement on the mechanical properties of interim fixed partial dentures
| Autor: | N. Gopichander, K.V. Halini Kumarai, M. Vasanthakumar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Fiber reinforcement
Universal testing machine Materials science Dentistry(all) Interim FPD lcsh:R lcsh:Medicine Young's modulus Polyester lcsh:RK1-715 symbols.namesake Compressive strength Flexural strength Deflection (engineering) lcsh:Dentistry Temporary FPD reinforcement symbols Polyester fiber reinforcement Original Article Provisional FPD Composite material Reinforcement General Dentistry |
| Zdroj: | Saudi Dental Journal, Vol 27, Iss 4, Pp 194-200 (2015) |
| ISSN: | 1013-9052 |
| Popis: | Background: Different reinforcements currently available for interim fixed partial denture (FPD) materials do not provide the ideal strength for long-term use. Therefore, the aim of this investigation was to develop a more ideal provisional material for long-term use with better mechanical properties. This study evaluated the effectiveness of polyester fiber reinforcement on different interim FPD materials. Methods: Thirty resin-bonded FPDs were constructed from three provisional interim FPD materials. Specimens were tested with a universal testing machine (UTM). The modulus of elasticity and flexural strength were recorded in MPa. The compressive strength and degree of deflection were calculated from the obtained values, and a two-way analysis of variance (ANOVA) was used to determine the significance. Results: The polyester fiber reinforcement increased the mechanical properties. The modulus of elasticity for heat-polymerized polymethyl methacrylate (PMMA) was 624 MPa, compared to 700.2 MPa for the reinforced heat-cured sample. The flexural strengths of the bis-acrylic and cold-polymerized reinforced samples increased significantly to 2807 MPa and 979.86 MPa, respectively, compared to the nonreinforced samples. The mean compressive strength of the reinforced cold-polymerized PMMA samples was 439.17 MPa; and for the reinforced heat-polymerized PMMA samples, it was 1117.41 MPa. The degree of deflection was significantly greater (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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