Genkent are registered trademark.
Replacement Toothbrush Heads Compatible With Oral B Professional Toothbrush Head Designed to thoroughly clean teeth while massaging gums Uses comfortably soft bristles with rounded ends Replace toothbrush heads at a dentist-recommended interval of three months Colored bands make toothbrush heads distinct so each family member can have their own Bristles change color to signal when it’s time to switch heads 2.0 inches (H) x 2.