How often should you change your toothbrush?
Even if your brush looks like it's in good shape, it may need to be replaced. In addition to looking less new with daily use, its fibers become less effective over time.
Not only that, but a toothbrush that has been used for a long time contains bacteria and mold, which damage the teeth.
But how often should we change the toothbrush?
"Ideally, you should replace your toothbrush every three to six months," says dentist Dr Amanda Lewis.
"If that sounds like a lot, remember: Tooth enamel is the hardest substance in the human body, so when you use your toothbrush every day, it wears down the fibers it's made of.
"Once they break down, their effectiveness decreases, which can increase the risk of tooth decay, bad breath and other oral health problems."
Then there is the bacteria factor. While anything can and will collect bacteria, your toothbrush is a veritable petri dish (used in laboratories).
"When a toothbrush is not given time to dry, it can attract airborne particles that begin to harbor and grow a colony of harmful bacteria," says dentist Mariya Malin.
Not to mention, if your toothbrush is kept near a toilet, it can also come into contact with bacteria like E. coli. Um, yuck, that's dangerous.