How often should you change your toothbrush?

a. 3-4 months
b. 4-6 months
c. Once a year
d. Every 6 weeks


ANSWER: a. 3-4 months

The American Dental Association recommends throwing out your toothbrush every three to four months. If the bristles become frayed, you're sick, or you have a weak immune system, throw it out even more often. If you use an electric toothbrush, throw out the head as often as you'd discard a disposable toothbrush.

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