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Nanoclay-reinforced polymethylmethacrylate and its mechanical properties
Ali Barzegar1,2, Tahereh Ghaffari1,3
1Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Dental Research Journal
|August 21, 2018
Summary
Adding nanoclay to dental acrylic resins negatively impacts tensile and impact strength. Higher nanoclay concentrations further compromise mechanical properties, suggesting caution in dental material modification.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Polymer Chemistry
Background:
- Dental resins are crucial for prosthetics and restorations.
- Enhancing physical properties of dental materials is an ongoing research area.
- Nanoclay has been explored as a potential filler to improve resin composites.
Purpose of the Study:
- To investigate the effect of nanoclay incorporation on the tensile and impact strengths of heat-curing acrylic resin.
- To determine the optimal concentration of nanoclay for potential property enhancement.
Main Methods:
- Nanoclay-acrylic resin composites were prepared with varying nanoclay concentrations (0.5, 1, 2 wt%).
- Tensile and impact strengths were tested on cubic specimens according to ISO 527 and ISO 179 standards.
- Statistical analysis was performed using one-way ANOVA and Scheffé's test.
Main Results:
- The control group (no nanoclay) exhibited the highest mean tensile and impact strengths.
- Acrylic resin with 2% nanoclay showed the lowest mean values for both mechanical tests.
- Increased nanoclay percentage significantly compromised tensile strength (P < 0.05) but did not affect impact strength.
Conclusions:
- Incorporating nanoclay particles into acrylic resins can adversely affect mechanical properties.
- The negative impact on mechanical properties is directly correlated with the concentration of nanoclay nanoparticles.
- Further research may be needed to explore alternative methods or concentrations for nanoclay reinforcement in dental resins.
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