Toothbrush head and method of manufacturing

A toothbrush head (1) connected to or connectable to a handle (2) to define a head-handle longitudinal direction (L-L) and a widthways direction (W-W) perpendicular to the longitudinal direction (L-L), the head (1) having a bristle surface (3) with a distal end (3A) further from the handle (2) and a proximal end (3B) closer to the handle (2), and having widthways opposite ends (3C, 3D), wherein tufts of bristles extend from the bristle surface (3), wherein the tufts of bristles comprise first tufts (5) comprising first bristles (6) and second tufts (7) comprising second bristles (8), wherein the first bristles (6) are non-tapered, end-rounded bristles with a circular cross-section, and wherein the second tufts (7) are positioned outermost closest to the widthways opposite ends (3C, 3D) on the bristle surface (3), and wherein the second bristles (8) have a stem (19) that splits into split ends (21), and wherein the split ends (21) are chemically tapered;

• wherein there are only first tufts (5) and second tufts (7) on the bristle surface (3), and wherein the first tufts (5) are positioned outermost closest to the distal end (3A) and outermost closest to the proximal end (3B) and centrally, inwardly from the widthways opposite ends (3C, 3D), on the bristle surface (3);
• wherein the first bristles (6) have a length, measured from where the first bristles (6) protrude from the bristle surface (3), which varies in a concave cut along the head-handle longitudinal direction (L-L) and wherein the first bristles (6) positioned closest to the distal end (3A) and closest to the proximal end (3B) have the same length (12);
• wherein the second bristles (8) have a length (l1), measured from where the second bristles (8) protrude from the bristle surface (3), which is uniform for all second bristles (8);
• and wherein the length (l1) of the second bristles (8) is longer than the lengths (l2, l3) of any other bristles on the bristle surface (3).