A cleaning section of an electrical toothbrush having a motor and a drive shaft, the cleaning section comprising: a brush head portion supporting a first plurality of contact elements that are mounted to the brush head portion so as to be static relative to the brush head portion; a movable contact element holder supported within the brush head portion and structured to receive a drive motion from the motor via the drive shaft having a longitudinal axis, wherein the drive shaft is structured to oscillate around its longitudinal axis, and a second plurality of contact elements being supported within the movable contact element holder to have at least one freedom of motion relative to the first plurality of contact elements; wherein the movable contact element holder is movable with respect to the brush head portion and the first plurality of contact elements such that a cleaning motion of the second plurality of contact elements includes an oscillating movement relative to the first plurality of contact elements, and wherein the oscillating movement of the second plurality of contact elements is caused by the oscillating movement of the drive shaft; and wherein the first plurality of contact elements and the second plurality of contact elements are arranged in rows that alternate such that at least some of the rows of the second plurality of contact elements are disposed between the rows of the first plurality of contact elements, and at least some of the rows of the first plurality of contact elements are disposed between the rows of the second plurality of contact elements; characterized in that the cleaning section further comprises an end extension portion including a third plurality of contact elements, the end extension portion being supported within the brush head portion to have at least one freedom of motion relative to the first plurality of contact elements such that the cleaning motion comprises at least an oscillation of the third plurality of contact elements relative to the first plurality of contact elements; and in that the end extension portion is directly coupled to the moving contact element holder for movement therewith. a brush head portion supporting a first plurality of contact elements that are mounted to the brush head portion so as to be static relative to the brush head portion; a movable contact element holder supported within the brush head portion and structured to receive a drive motion from the motor via the drive shaft having a longitudinal axis, wherein the drive shaft is structured to oscillate around its longitudinal axis, and a second plurality of contact elements being supported within the movable contact element holder to have at least one freedom of motion relative to the first plurality of contact elements; wherein the movable contact element holder is movable with respect to the brush head portion and the first plurality of contact elements such that a cleaning motion of the second plurality of contact elements includes an oscillating movement relative to the first plurality of contact elements, and wherein the oscillating movement of the second plurality of contact elements is caused by the oscillating movement of the drive shaft; and wherein the first plurality of contact elements and the second plurality of contact elements are arranged in rows that alternate such that at least some of the rows of the second plurality of contact elements are disposed between the rows of the first plurality of contact elements, and at least some of the rows of the first plurality of contact elements are disposed between the rows of the second plurality of contact elements; characterized in that the cleaning section further comprises an end extension portion including a third plurality of contact elements, the end extension portion being supported within the brush head portion to have at least one freedom of motion relative to the first plurality of contact elements such that the cleaning motion comprises at least an oscillation of the third plurality of contact elements relative to the first plurality of contact elements; and in that the end extension portion is directly coupled to the moving contact element holder for movement therewith.