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Electric v manual toothbrushes: Which are better?

Dr Vinai Pitchika at the University of Greifswald in Germany is part of a team that followed people for over a decade and measured rates of tooth decay, gum disease and tooth loss. He tells Claudia Hammond about the advantages and disadvantages of manual and electric toothbrushes.

(Image: Electric toothbrush. Credit: Getty Images.)

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3 minutes