More than 50% of people experience oral care issues like gingivitis associated with poor interdental cleaning. InterCare is Philips Sonicare best interdental brush head. It is designed with three tufts of specially designed bristles to provide a deep clean between teeth and improve gum health in just 2 weeks. Intercare's anchor-free tufting technology allows for unique bristle patterns and lengths to achieve clinical superiority, removing up to 7x more plaque between teeth than a manual toothbrush and reaching 35% deeper between teeth than oral-b floss action brush head. Reminder bristles fade when it's time to change your brush head. For optimal results, replace your brush head every 3 months as recommended by the American Dental Association. A fresh brush head every 3 months maximizes the effectiveness of Philips’ unique Sonicare technology.