A toothbrush comprising: a head with a mounting surface; and a plurality of tufts of bristles secured to the head and projecting outward therefrom to engage and clean a user's teeth, the bristles of the plurality of tufts all having the same length, the plurality of tufts of bristles comprising: multiple first tufts of bristles extending into the head at a first depth of insertion from the mounting surface, multiple second tufts of bristles extending into the head at a second depth of insertion from the mounting surface, and at least one third tuft of bristles extending into the head at a third depth of insertion from the mounting surface, wherein the second depth is greater than the first depth, the third depth is greater than the first depth, and the third depth is greater or less than the second depth, whereby respective terminal ends of the multiple first tufts, the multiple second tufts, and the at least one third tuft are at different respective heights to define a contoured cleaning profile of the tufts to engage and clean a user's teeth; characterised by the multiple first tufts, the multiple second tufts and the at least one third tuft being composed of tapered bristles, each tapered bristle being tapered toward a terminal end of the bristle; by the multiple second tufts being located between the multiple first tufts; and by the at least one third tuft being located between the multiple second tufts. a head with a mounting surface; and a plurality of tufts of bristles secured to the head and projecting outward therefrom to engage and clean a user's teeth, the bristles of the plurality of tufts all having the same length, the plurality of tufts of bristles comprising: multiple first tufts of bristles extending into the head at a first depth of insertion from the mounting surface, multiple second tufts of bristles extending into the head at a second depth of insertion from the mounting surface, and at least one third tuft of bristles extending into the head at a third depth of insertion from the mounting surface, wherein the second depth is greater than the first depth, the third depth is greater than the first depth, and the third depth is greater or less than the second depth, whereby respective terminal ends of the multiple first tufts, the multiple second tufts, and the at least one third tuft are at different respective heights to define a contoured cleaning profile of the tufts to engage and clean a user's teeth; characterised by the multiple first tufts, the multiple second tufts and the at least one third tuft being composed of tapered bristles, each tapered bristle being tapered toward a terminal end of the bristle; by the multiple second tufts being located between the multiple first tufts; and by the at least one third tuft being located between the multiple second tufts. multiple first tufts of bristles extending into the head at a first depth of insertion from the mounting surface, multiple second tufts of bristles extending into the head at a second depth of insertion from the mounting surface, and at least one third tuft of bristles extending into the head at a third depth of insertion from the mounting surface, wherein the second depth is greater than the first depth, the third depth is greater than the first depth, and the third depth is greater or less than the second depth, whereby respective terminal ends of the multiple first tufts, the multiple second tufts, and the at least one third tuft are at different respective heights to define a contoured cleaning profile of the tufts to engage and clean a user's teeth; characterised by the multiple first tufts, the multiple second tufts and the at least one third tuft being composed of tapered bristles, each tapered bristle being tapered toward a terminal end of the bristle; by the multiple second tufts being located between the multiple first tufts; and by the at least one third tuft being located between the multiple second tufts.