Influence of Environmental Exposure on Absorption, Solubility and Flexural  Properties of Į-cordierite Filled Denture Base Poly (Methyl Methacrylate)

Hoaida K. Shawi; Awatef M  Younis; Zainal A  Ahmad; Hazizan Md  Akil

doi:10.54361/

Authors

Hoaida K. Shawi Faculty of medical technology, Az Zawia university, Zawia, Libya Author
Awatef M Younis Faculty of medical technology, Az Zawia university, Zawia, Libya Author
Zainal A Ahmad School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Malaysia. Author
Hazizan Md Akil chool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Malaysia. Author

DOI:

https://doi.org/10.54361/

Keywords:

poly (methyl methacrylate), Į-cordierite, environmental exposure, flexural strength, simulated body fluid.

Abstract

The usage of Į-cordierite ceramic in denture base poly (methyl methacrylate) as reinforcement is never been reported in open literature. The aim of this study attempted to investigate the effects of Į-cordierite on environmental properties of PMMA denture base material, also study the influence of environmental exposure on flexural properties. The Į- cordierite was treated with silane coupling agent. According to the standard dental laboratory application, the samples were prepared by adding Į-cordierite powder (0, 5, 10, and 15 wt%, respectively) to the MMA monomer and PMMA mixed by hand. The blend at dough stage packed to fill moulds. The samples were tested for environmental properties after soaking for 28 days in water and simulated body fluid. Flexural strength was investigated for PMMA matrix sample and composites samples before and after immersion in water and SBF. The morphology of the specimens was investigated by scanning electron microscope . The results showed that the samples which continued with the treated filler showed higher wat absorption. Also, the absorption of simulated body fluid was found to be more in the samples that contained treated filler. But, the solubility of simulated body fluid was less in the composites samples. The flexural properties in all samples were decreased after immersion.

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