Bacteria and Orthodontic Retainers

Researchers in the United Kingdom investigated whether orthodontic retainers could be resevoirs for opportunistic pathogens. They found 50% of the retainers tested harbored microscopic pathogens. Candida species were found on 66.7% of the retainers and Staphylococcus species were found on 50% of the retainers. The study concludes that orthodontic retainers can be a source of cross, self-, and re-infection for opportunistic pathogens. Therefore, make sure your teeth are brushed and flossed well before putting the retainers in your mouth. Then when the retainers are removed, make sure that the retainers are brushed well to remove any new bacteria. This will help to prevent further recontamination.