Patent attributes
An electrical toothbrush includes an elongated handle body, a motor received in the handle body to drive a driving shaft to rotate, and a brush head including an elongated brush arm detachably mounted to the driving shaft and arranged when the driving shaft is driven to rotate, the brush arm is rotated correspondingly and a plurality of brushing bristles radially and outwardly extended from the brush arm for generating a rolling motion to substantially brush a user's teeth when the brush arm is driven to rotate, wherein the brush arm is arranged for locating at a position that the brushing bristles are tangentially rolling on the tooth surface to brush the tooth surface and are consequently brush the gumline at a predetermined angle to remove plaque from the areas between teeth and around the gums.