An electric toothbrush comprising: an elongated body portion with opposed first and second ends (12, 14) and a longitudinal axis extending between the first and second ends (12, 14); a brush head section arrangeable toward the first end of the elongated body portion and comprising: a first bristle support member rotatable in a first direction about a centrally defined axis of the first bristle support member, and a second bristle support member coupled to the first bristle support member and rotatable in a second direction about a centrally defined axis of the second bristle support member, the second direction being opposite the first direction; and a drive rod coupled to at least the first bristle support member and having an axis oriented so as to extend coincident with, or substantially parallel to, the longitudinal axis of the electric toothbrush, the drive rod being arranged to linearly move along the axis so as to rotate the first bristle support member in the first direction and rotate the second bristle support member in the second direction; characterized in that the drive rod is coupled to the first bristle support member by a first linkage bar, the first linkage bar comprising a first end coupled to the drive rod and a second end eccentrically coupled to the first bristle support member so as to form a first fixed connection point, the first fixed connection point of the first linkage bar being spaced apart from the centrally defined axis of the first bristle support member, and in that the second bristle support member is coupled to the first bristle support member by a second linkage bar, the second linkage bar comprising a first end coupled to the first fixed connection point and a second end eccentrically coupled to the second bristle support member so as to form a second fixed connection point, the second fixed connection point of the second linkage bar being spaced apart from the centrally defined axis of the second bristle support member. an elongated body portion with opposed first and second ends (12, 14) and a longitudinal axis extending between the first and second ends (12, 14); a brush head section arrangeable toward the first end of the elongated body portion and comprising: a first bristle support member rotatable in a first direction about a centrally defined axis of the first bristle support member, and a second bristle support member coupled to the first bristle support member and rotatable in a second direction about a centrally defined axis of the second bristle support member, the second direction being opposite the first direction; and a first bristle support member rotatable in a first direction about a centrally defined axis of the first bristle support member, and a second bristle support member coupled to the first bristle support member and rotatable in a second direction about a centrally defined axis of the second bristle support member, the second direction being opposite the first direction; and a drive rod coupled to at least the first bristle support member and having an axis oriented so as to extend coincident with, or substantially parallel to, the longitudinal axis of the electric toothbrush, the drive rod being arranged to linearly move along the axis so as to rotate the first bristle support member in the first direction and rotate the second bristle support member in the second direction; characterized in that the drive rod is coupled to the first bristle support member by a first linkage bar, the first linkage bar comprising a first end coupled to the drive rod and a second end eccentrically coupled to the first bristle support member so as to form a first fixed connection point, the first fixed connection point of the first linkage bar being spaced apart from the centrally defined axis of the first bristle support member, and in that the second bristle support member is coupled to the first bristle support member by a second linkage bar, the second linkage bar comprising a first end coupled to the first fixed connection point and a second end eccentrically coupled to the second bristle support member so as to form a second fixed connection point, the second fixed connection point of the second linkage bar being spaced apart from the centrally defined axis of the second bristle support member.