No. 1 Oral-B. Trust the brush dentists use the most worldwide. Removes 400% more plaque along the gumline (vs. a regular manual toothbrush). Interchangeable brush head fits most Oral-B toothbrushes. Does Not Fit: iO rechargeable; 3D White battery; Complete battery; gum care battery. 1) Features end-rounded bristles for cleaner teeth & healthier gums (vs. a regular manual toothbrush). 2) Indicator bristles signal time to replace brush head. Dentists recommend changing your brush head every 3 months. End-round bristles for cleaner teeth and healthier gums (vs. regular manual toothbrush). Removes 400% more plaque along the gumline (vs. regular manual toothbrush). Fits most Oral-B rechargeable handles (except Oral-B iO).