The ADA recommends using a soft-bristled toothbrush with a head that is ergonomically proportioned to the inside of your mouth. You can effectively brush your teeth with either a manual toothbrush or an electric one. However, the rapid movements of motorized versions may be more effective at removing plaque from your teeth and gum line.
If you have questions about which toothbrush is best for you, speak with your dentist about it at your next visit. He or she may recommend an electric brush with an oscillating head or a brush that includes a timer to let you know how long to brush.