Compatible with rechargeable Handpieces of Oral-B, except with a Oral-B Sonic toothbrushes Reduces gum inflammation by 100% compared with an ordinary manual toothbrush Developed in conjunction with dental: Round Brush Head with combination of ultra-thin, standard, the bristles gentle but tough Oral-B - The Number 1 toothbrush brand, the dental practices worldwide most often use it yourself Removes up to 100% more plaque than a regular manual toothbrush, allowing for healthier gums | Oral-B Sensi Ultrathin Heads 5 Pk | Wowcher