Some people prefer to use a power toothbrush. They are especially useful if you have limited movement or find cleaning particularly difficult. These toothbrushes usually have heads which either rotate and oscillate, or pulsate. Some power toothbrushes are meant to be thrown away when the battery runs down, and some are rechargeable. You can buy power toothbrushes from your local pharmacy, retailer or dental team. Power toothbrushes with rotating and oscillating heads have been proven to be the most effective. Many power toothbrushes have timers built in to help you brush for the correct amount of time.