Oral-B Precision Clean Electric Toothbrush Replacement Head removes plaque and the bristle wrap each tooth cleaning it individually. Plus, it reaches the deeper spaces between the teeth and covers more surface. The Oral-B Precision Clean bristles reach deep between teeth and cover more surface, leaving your whole mouth cleaner than a regular manual, and power away up to 100 % more plaque for a precise clean vs. a regular manual toothbrush.