Researches lead by Sara Tavassoli at Shahed University, Tehran, Iran, wanted to create a composite resin with antibacterial properties without reducing its mechanical and physical properties. “Zinc oxide nanoparticles were added to a preventive and treatment material and its antibacterial, mechanical, and physical properties were investigated at the same time,” she said.
Adding zinc oxide nanoparticles to the resins increased the antibacterial properties. Because cavities are infectious and bacteria play an important role, the use of antibacterial composite resins will help prevent more cavities.
Results of show that adding zinc oxide nanoparticles to the composite resin in all investigated percentages (1-5 weight percent) significantly decreases Streptococcus mutans growth and do not change the mechanical properties in 1-2 weight percentages.
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