Michigan dentist's Bluetooth toothbrush tells you how well you brushed

Richter, a dentist of more than 40 years who works in Saginaw Township at Fashion Square Dental , 2650 McLeod, has invented a toothbrush to help fight cavities and remove plaque. "I wanted to have a smart toothbrush that could tell the user not only did they brush all their teeth but did they brush every part of the tooth and did they get on the tooth long enough," he said.

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