Oral-B toothbrushes that use alkaline batteries should last between 4 and 6 weeks on fresh batteries. Our brushes are designed to be used for two minutes, twice a day.
Dentists recommend replacing your brush head every 3 months to maintain performance or sooner if you brush more than twice daily or longer than 2 minutes.
When used regularly, the bristles on your brush head can become frayed and worn causing them to lose their effectiveness when it comes to keeping your teeth clean. In fact, clinical research shows that a new brush head can better remove more plaque than one that’s worn out.
