To clean your teeth.
The modern day boob
phone ,massage chair, electric tooth brush
Made feudal China
tooth brush, electric toy car,
The sentence's answer is William Yadis invented the toothbrush in 1780.
Electrical energy, converted to mechanical energy by an electric motor.
Wrap it up in tin foil.
Get a tooth brush and tooth paste and there brush your teeth….DUH!!
Electric toothbrushes themselves do not decrease cavities. Cavities are more likely to form in the areas a person does not reach with their regular brush. Some do just fine with a regular manual brush where others do better with the electric.
well the tooth brush was invented some time in June
Good question. I would say it's called tooth brush because of the size of the brush. Technically, it really only brushes one tooth at the time, hence a teeth brush would be longer and more cumbersome to use in the mouth.