High-Tech Toothbrush Corrects Common Brushing Errors

More commonly, people hold their toothbrushes perpendicular to their teeth and gums, said Alexander Kandemir, inventor of the new iBrush 365. The gums should make a tight seal with the teeth, but holding a toothbrush perpendicular to the teeth pushes the gums upward and makes them start to pull away, he added.