The Oral-B CrossActionX X-Filament Replacement Brush Heads advanced filament technology design was created to brush away plaque. This replacement brush head gives you a superior clean with 6x more plaque removal*. Oral-B's CrossActionX Replacement Brush Head with X-Filament bristles is an ideal addition to your brushing routine because the special design of X-shaped bristles lift, trap, break up, and remove plaque along the gumline, providing an advanced clean. This dentist-inspired round brush head gives a tooth-by-tooth clean with specially engineered bristles to ensure optimal coverage on every tooth. Oral-B replacement brush head has indicator bristles that signal when it is time to replace your brush head. Round cleans better* and new cleans best. A new replacement brush head removes more plaque than a worn one. The Oral-B CrossActionX replacement brush head pack includes three genuine Oral-B CrossActionX Replacement Brush Heads with X-Filament bristles. The Oral-B CrossActionX X-Filament Replacement Brush Heads are compatible with all Oral-B rechargeable toothbrushes, except for Oral-B iO Toothbrushes. Oral-B recommends brushing with Crest Toothpaste for optimal results. Do not use on children under age 3. Replace brush head every three months or sooner if brush head becomes worn. Oral-B: Trust the brand dentists use the most worldwide.***Vs. regular manual toothbrush.**Based on surveys of a representative worldwide sample of dentists carried out for P&G regularly.