Gentle care adapts exactly to the curvature of the tooth and gum line for gentle and effective cleaning For gentle and effective cleaning on sensitive areas and gums The bristles are carefully arranged on the typical Oral-B round head to better enclose each tooth for optimal cleaning Dentists recommend changing the brush every 3 months for optimal cleaning International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings and language of the product, labelling or instructions.