The bristles do not kill bacteria in the mouth or protect you against disease.
a regular manual toothbrush when used on Pro 1000 and up handlesPackage includes 5 Oral-B CrossAction Replacement Brush Heads · Bacteria Guard Bristles help keep your brush clean up to 3 months* *Inhibits microbial growth that may affect the bristles. a regular manual toothbrush when used on Pro 1000 and up handles · Round brush head is inspired by dental professional tools for a tooth-by-tooth clean, with specially engineered bristles · Compatible with the entire lineup of Oral-B rechargeable handles, except for Oral-B sonic toothbrushes · Oral-B is the #1 dentist-recommended toothbrush brand worldwideOral-B recommends brushing with Crest Toothpaste for optimal resultsCaution: DO NOT USE ON CHILDREN UNDER AGE 3. Oral-B CrossAction Electric Toothbrush Replacement Brush Heads 3 Count It features perfectly angled bristles to remove 500% more plaque for a superior clean**.