Nanoparticles may help prevent tooth decay
#1/8/2016 #Monday Scientists have found a way to use nano particles to effectively break down plaque and wipe out more than 99.9% of cavity causing bacteria within minutes, an advance that may help better prevent tooth decay. The bacteria that live in dental plaque and contribute to tooth decay often resist traditional antimicrobial treatment, as they can ''hide'' within a sticky bio film matrix, a glue-like polymer scaffold. Researchers at University of Pennsylvania took a more sophisticated approach. Instead of applying an anti-microbial to the teeth, they took advantage of the pH-sensitivity and enzyme- like properties of iron-containing nano particles to catalyse the activity of hydrogen peroxide, a commonly used natural antiseptic. The activated hydrogen peroxide produced free radicals that were able to degrade the biofilm matrix and kill the bacteria within, significantly reducing plaque and preventing tooth decay, or cavities, in an animal mo...