Influence of Polypropylene Fibre Reinforcement of Different Methods and Lengths on Some Properties of Denture Base Resin Processed by Autoclave
Authors
Acrylic resins are the most common denture materials because of their valuable optical property. Their impact strength is limited, therefore they require different methods and processes of reinforcement. The reinforcements could be performed by the application of fibres such as polypropylene fibres. In this study, the influence of randomly oriented polypropylene fibre (2%) in two lengths (6mm, 12mm) and different applied methods (without impregnation, impregnation) on impact strength, surface roughness, and water sorption and solubility of heat-cured acrylic resin processed by autoclave was investigated. Specimens (150 samples) were prepared and divided into a control group and a reinforced group. The reinforced group was divided according to the fibre lengths 6mm and 12mm; then each one was subdivided according to the method of fibre addition (direct fibre addition to powder and fibres immersed in monomer). There were ten specimens in each group for each test. Acrylic resin reinforced with 2% randomly oriented polypropylene fibres regardless of the applied method and length, showed significant improvement regarding the impact strength and water solubility. However, a non-significant effect was detected on surface roughness and water sorption test according to (ANOVA f-test). The surface roughness and impact strength of reinforced autoclave processed acrylic resin with randomly oriented polypropylene fibres (2%, 12mm) with monomer impregnation were significantly improved in comparison to other groups, with no effect on water sorption property.
Keywords:
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- Published: 2025-03-10
- Issue: Vol. 8 No. 1 (2025): APPLIED MEDICAL SCIENCE
- Section: Articles
