The Oral-B Ortho brush head is compatible with all Oral-B electric toothbrush handles, except Oral-B Sonic. It is compatible with Oral-B SmartSeries, Oral-B PRO, Oral-B Vitality (except Vitality Sonic); Oral-B Pro-Expert, and Oral-B TriZone toothbrushes. The brush head designs are inspired by dentists' tools. The kit contains one brush head that cleans between teeth and around braces and two orthodontic brush heads that gently remove plaque.