The Oral-B iO Specialized Clean toothbrush head is specially designed to reach and clean areas that require special focus, such as braces, implants and misaligned teeth.    Characteristics:    Oral-B iO Specialized Clean is precisely shaped, with angled outer cavities that support the central curve to reach and clean hard-to-reach areas.  iO Technology combines Oral-B's unique round toothbrush heads with the gentle micro-vibrations of the iO toothbrush for Oral-B's superior cleaning performance.  Oral-B iO brush heads are specially designed to match Oral-B iO toothbrushes.