When was the last time you changed your toothbrush? The ADA (American
Dental Association) recommends replacing a toothbrush every 3 or 4 months.
From viewing the pictures above you may think that the toothbrush needs
to be replaced because it looks "dirty". According to the CDC,
(Center for Disease Control and Prevention) millions and millions of microorganisms
inhabit our mouths. Our trusty toothbrushes are not just havens for potentially
pathogenic bacteria; these bad boys harbor blood, saliva, and other debris
as well. To your surprise, even though, there's all those "dirty"
things on our toothbrushes that's not why the ADA recommends changing
it so often. The changing period is based on the wear and tear of the
bristles, which consequently may cause the toothbrush to become less effective.
So, all that debris seen in the pictures is most likely just the bristle
material being torn and scraped from my 3 months of brushing. (Want to
look at the pictures of the new OralB toothbrush, just click me!)