Things to know about electric toothbrushes: No electric toothbrush has the ADA seal right now. Moreover, electric toothbrushes costs 10 times more than normal toothbrushes and they are costlier to maintain, you have to replace the brushes just as you replace regular toothbrushes, and they need batteries.

On the plus side, electric toothbrushes remove more plaque and reduce gingivitis at a far better rate. They are ideal for people who are too lazy to use a normal toothbrush properly.

About expensive electric toothbrushes: So far, there is not much confirmation fom indepenedent studies that so-called 'sonic' toothbrushes (removing bacteria with sound waves), pressure sensors (so you don't brush too hard), etc  actually are of much use.

The best electric toothbrush: Oral-B Pro 1000 (great features at a great price, two-minute timer, easy brushing process, compatible with the largest range of brush heads.)

The second best electric toothbrush: Philips Sonicare 2 Series (two-minute timer, rechargeable battery, and less noise than Oral-B Pro)