ackage includes 2 Genuine Oral-B Pro-Health replacement brush headsRotating powerhead loosens and whisks away plaque from surfaces, gumline and back teeth while CrissCross bristles reach deep between teeth to lift out and sweep away plaqueBrush heads should be replaced every 3 months. Compatible with Oral-B Complete, 3D White, and Pro-Health battery power toothbrushesAnti-Microbial bristle protection inhibits microbial growth that may affect the bristles for up to 90 days. Anti-Microbial Bristle Shield helps keep bristles cleaner between brushing. The bristles do not kill bacteria in the mouth or protect against diseasAlso try with these Pro-Health products: Crest Pro-Health Toothpaste, Crest Pro-Health Mouth Rinse, Oral-B Glide Pro-Health Flos