toothbrush

How often should you change your toothbrush?

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The American Dental Association recommends replacing your toothbrush every three to four months, or sooner if the bristles are frayed. The same applies to the heads of electric toothbrushes. Why it matters Bristles wear down with daily brushing. Splayed, bent bristles reach less of the tooth surface and the gumline, so plaque is left behind. … Read more

Electric toothbrush charger: how it works and how to fix charging problems

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Most electric toothbrushes have no metal contacts. They charge by induction: a coil in the base creates a magnetic field, and a coil in the handle turns it back into current. That keeps the handle sealed and water-resistant, which is why you can rinse it under the tap. Can you use a different charger? Usually … Read more