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- Title
The Reinforcement Effect of Nanozirconia on the Transverse Strength of Repaired Acrylic Denture Base.
- Authors
Gad, Mohammed; ArRejaie, Aws S.; Abdel-Halim, Mohamed Saber; Rahoma, Ahmed
- Abstract
Objective. The aim of this study was to evaluate the effect of incorporation of glass fiber, zirconia, and nanozirconia on the transverse strength of repaired denture base. Materials and Methods. Eighty specimens of heat polymerized acrylic resin were prepared and randomly divided into eight groups (n=10): one intact group (control) and seven repaired groups. One group was repaired with autopolymerized resin while the other six groups were repaired using autopolymerized resin reinforced with 2 wt% or 5 wt% glass fiber, zirconia, or nanozirconia particles. A three-point bending test was used to measure the transverse strength. The results were analyzed using SPSS and repeated measure ANOVA and post hoc least significance (LSD) test (P≤0.05). Results. Among repaired groups it was found that autopolymerized resin reinforced with 2 or 5 wt% nanozirconia showed the highest transverse strength (P≤0.05). Repairs with autopolymerized acrylic resin reinforced with 5 wt% zirconia showed the lowest transverse strength value. There was no significant difference between the groups repaired with repair resin without reinforcement, 2 wt% zirconia, and glass fiber reinforced resin. Conclusion. Reinforcing of repair material with nanozirconia may significantly improve the transverse strength of some fractured denture base polymers.
- Subjects
ZIRCONIUM oxide; DENTURE adhesives; GLASS fibers; ACRYLIC resins; CONTROL groups; ANALYSIS of variance
- Publication
International Journal of Dentistry, 2016, p1
- ISSN
1687-8728
- Publication type
Article
- DOI
10.1155/2016/7094056