Description + - Oral-B Pro-Health Replacement Brush Heads for Battery Toothbrush - For a Healthy Mouth 1. Bristle Protection Technology helps keep your bristles clean*2. Fits all Battery Powered Toothbrushes*Inhibits microbial growth that may affect the bristles. The bristles do not kill bacteria in the mouth or protect you against disease. Read more Reviews + - Oral-B Pro-Health Replacement Brush Heads for Battery Toothbrush - For a Healthy Mouth 1. Bristle Protection Technology helps keep your bristles clean*2. Fits all Battery Powered Toothbrushes*Inhibits microbial growth that may affect the bristles. The bristles do not kill bacteria in the mouth or protect you against disease.