The Oral-B iO Series Braces & Orthodontic clean replacement brush head is specially designed to reach and clean areas which require special focus such as braces, implants and misaligned teeth. The outer tufts angle inward to support the taller central tuft, enabling targeted reach to areas that require special focus – whether around orthodontic treatments, dental implants, or other hard-to-reach areas requiring extra care. Ideal for people with specialized oral hygiene needs who wish to avoid plaque-related complications. Since dentists recommend changing your toothbrush head every 3 months for best results, Oral-B replacement brush heads feature color-changing bristles that fade from blue to white to signal when it's time to change. So you can get back to 100% Cleaning Power.<br> (Beware of compatible products and parallel import goods) The product failure is not covered by the warranty of using compatible products or parallel import goods from overseas<br> *vs regular manual toothbrush