Hearing the sound of your toothbrush against your teeth makes you think you’ve done a good job of brushing. Photo: Corbis

We think we’ve cleaned our teeth well when we hear toothbrush scrubbing them

Research in Japan finds aural feedback increases oral hygiene, but scientists admit piping the sound through regular headphones worn while you brush won’t work - though a speaker in the brush might

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Hearing the sound of your toothbrush against your teeth makes you think you’ve done a good job of brushing. Photo: Corbis
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