The brand more dentists use themselves.ToothbrushP & G-HealthDentists recommend changing your brush every 3 months.Uses:Has soft vibrating bristles and helps break up plaque between teeth. Just turn it on and brush as you would with a regular manual brush. Manual brush with deep cleaning power, so it cleans better than an ordinary manual brush.* Slim handle with built-in power supply. Fully disposable. No need to change the battery or brush head. Non-replaceable. Duracell battery is designed to last the lifetime of the brush head, approximately 3 months. Actual battery life may vary. *Single-use brushing study.