Everyone knows to regularly replace air filters and oil in the car, but most people don’t change out their toothbrushes often enough. Because toothbrushes can harbor bacteria that contribute to gingivitis and periodontitis, you should get a new toothbrush about every three months. Committing to this schedule may also improve your health as toothbrushes can hold the germs that lead to infections like strep throat or common colds.
In between replacements, you can keep your toothbrush clean by soaking it after use in an anti-microbial mouthwash for around 30 minutes. If you buy different color toothbrushes for each family member, consider placing them in the dishwasher several times a week to ward off bacteria. Don’t share toothbrushes, even with a spouse or family member, as this can spread illness and germs.
When you get sick, change your toothbrush two days after you begin antibiotics or as soon as you feel better if you have a viral infection. Replacing your toothbrush will decrease the chances of re-infecting yourself. Research has shown that organisms like the ones responsible for the herpes simplex virus and common yeast-like infections can live up to seven days on a toothbrush.
Throw out your toothbrush when the bristles begin to look worn. Once the bristles start to fray, they don’t effectively remove plaque, which can build up and form tartar on your teeth. Most dentists recommend getting a soft bristle toothbrush so that you don’t damage your teeth and gums when you brush.