A major benefit of using the electric toothbrush is that it will clean your teeth similar to what you will receive in a dental ofice.  Electric toothbrushes will remove stain, and improve the color of your teeth.  Hand brushing does not get the bacteria that are in hard to reach areas, where as electric toothbrush will be able to reach and eliminate these bacteria which will cause bad breath and disease.  Most Users experience a deeper cleaning from those who use manual toothbrushes.