A detachable head for use with an electric toothbrush is provided. The electric toothbrush has a handle with a motor disposed therein. The electric toothbrush also has a head which has a longitudinal axis, and a neck disposed between the head and handle. The head has a first bristle holder and a second...http://www.google.es/patents/US6952854?utm_source=gb-gplus-sharePatente US6952854 - Complex motion toothbrush
