Electric Toothbrushes

With the manual toothbrush, there's two different ways you can brush your teeth. One is to go in circular motions along the teeth. The other one is to sort of place it at a 45 degree angle towards your gums but lightly back and forth across the teeth. And with electric toothbrushes, it's the same as two minutes, but essentially you don't have to use your hand to do the brushing. So when they ask what the most optimal way is, if you were going to go by the amount of effort put into the amount of time, then electric toothbrush is less effort from us,. obviously more effort from electricity.