How often do you replace your toothbrush? According to the American Dental Association, you should get a new toothbrush every 3-4 months. Bacteria and bent bristles can decrease the effectiveness of your daily brushing.
Your old toothbrush can harbor bacteria for quite some time, so if you have had another person use your toothbrush or are back to your full health after sickness, it’s a good idea to sanitize your toothbrush to maintain your health.
If you’re concerned about the growth of bacteria on your toothbrush, be sure to keep your toothbrush in a ventilated area.