Patent ID: 7810199

Claim:
A toothbrush head for an electric toothbrush, the toothbrush head comprising: a brush-head carrier having an end configured to be releasably connected to a hand part of an electric toothbrush; first and second bristle carriers attached to the brush-head carrier and bearing first and second sets of bristle tufts, respectively, each of the first and second bristle carriers being configured to be driven in a respective oscillation relative to the brush-head carrier in use, wherein at least one of the first and second sets of bristle tufts comprises a first bristle tuft which differs from a second bristle tuft with regard to at least one of bristle tuft cross section, bristle tuft length, bristle tuft inclination angle, and bristle stiffness, and wherein the second bristle carrier has two outer rows and at least one inner row, all said rows extending in a longitudinal direction of the toothbrush and comprising bristle tufts having oval-shaped cross-sections with a longer dimension oriented in a transverse direction relative to the longitudinal direction of the toothbrush, the bristle tufts in the outer rows being inclined in a first direction substantially parallel to the longitudinal direction of the brush, while the bristle tufts in the at least one inner row being inclined in a second direction opposite to the first direction.