Spare Heads for Electric Toothbrush As one of Oral-B's premium replacement brush heads, the Sensitive Clean features a combination of ultra-fine bristles that are gentle on gums and regular bristles that are tough on plaque. This unique combination makes the Sensitive Clean an ideal replacement head for those with a sensitive oral cavity and for those simply looking for an excellent but gentle cleaning. Sensitive Clean removes up to 100% more plaque and reduces gingivitis by 100% compared to a manual toothbrush. Compatible with all Oral-B handles except Pulsonic & iO. Contents: 4 replacement Oral-B Sensitive Clean brush heads Features & Benefits: Oral-B's best choice for gentle cleaning and healthier gums (excluding Oral-B iO) Up to 100% more plaque removal and healthier gums than a regular manual toothbrush Combination of regular fibers for cleaner teeth and ultra-fine fibers for healthier gums Dentists recommend changing the brush head every 3 months for superior cleaning Compatible with all Oral-B handpieces except Pulsonic & iO From the #1 electric toothbrush brand recommended by dentists worldwide