Thermoplastic retainers with large retention areas can create a conducive environment for Streptococcus mutans colonization. Nanoparticle materials have recently been developed as antibacterial agents and have been scientifically proven to decrease bacterial colonization. This study compared the effectiveness of two types of nanoparticle solutions, silver nanoparticle (AgNP) and titanium dioxide nanoparticle (TiO2NP) as disinfectants for thermoplastic retainers by measuring the change in S.mutans colony forming units. This laboratory experiment counted the total number of S.mutans bacteria before and after treatment with the test nanoparticle solutions. A set of 24 thermoplastic retainers were divided into three groups. The AgNP solution was applied to the first retainer group; the TiO2NP solution was applied to the second retainer group; and the last retainer group served as a control. There was a statistically significant decrease in the S. mutans colony counts after both nanoparticle solutions were applied to the thermoplastic retainers. No significant difference in disinfectant effectiveness was found between the two types of nanoparticle solutions. Both AgNP and TiO2NP solutions were effective in reducing the S.mutans colony count on thermoplastic retainers.
|Number of pages
|Journal of International Dental and Medical Research
|Published - 1 Jan 2019
- Silver nanoparticle
- Streptococcus mutans
- Thermoplastic retainer
- Titanium dioxide nanoparticle