A spiral bristle (201) includes: a first component (231), a second component (233), and a third component (235), with each of the second and third components (233, 235) wrapping around the first component (231) in a helical and spaced-apart manner, the second and third components (233, 235) isolated from one another by the first component (231). An oral care implement includes the spiral bristle.

A light-emitting oral care implement includes a light delivery unit that includes a passageway through a body of the oral care implement and a tuft comprising a plurality of filaments located in the passageway, each of the filaments having a core component and a sheath component. The core component may have a transmittance that is greater than the transmittance of the sheath component. The core component may include a base portion that protrudes from a lower end of the sheath component, the base portion forming an anchor portion of the tuft that anchors the tuft to the body of the oral care implement. Furthermore, the oral care implement may include a light source that transmits lights through the anchor portion of the tuft and through the core components for transmittance from the filaments at a location above a front surface of the body.

A bristle and a tooth brush incorporating the same. A toothbrush (100) having a handle (120), a head (110) coupled to the handle (120), and at least one bristle that comprising a composition including a polymer and fibroin particles.

The disclosure provides dental hygiene devices including a plurality of bristles in the form of polymer fibers, the polymer fibers having a plurality of microcapsules positioned within at least a portion of the polymer fibers, and the plurality of microcapsules comprising an oral care additive surrounded by a shell configured as one or a plurality of layers. In some aspects, the present disclosure provides processes and methods for forming toothbrush bristles including an oral care additive contained therein.

An oral-care implement including a filament comprising an external material and at least a first internal material. The filament includes an elongated flexible body having a length, a longitudinal axis, and a longitudinal outer surface comprising the external material, the elongated body terminating with a tip having a tip surface comprising the external material, wherein the tip surface has therein a plurality of craters distributed throughout the tip surface in a predetermined pattern, each of the craters having a surface edge of a predetermined size and a predetermined shape, walls extending longitudinally from the surface edge and comprising the external material, and a bottom comprising the at least first internal material and situated at a depth from the surface edge, the surface edge being formed by the walls and the tip surface.

A monofilament bristle (211) including: a body portion (215); a tip portion (217) extending from the body portion (215) and comprising a multi-lobed transverse cross-section (221), the monofilament bristle (211) extending along a longitudinal axis (219); co-extruded first and second components, the first component being a first color and forming a first lobe (223a) of the multi-lobed transverse cross-section (221), the second component being a second color, which is different from the first color, and forming a second lobe (223b) of the multi-lobed transverse cross-section (221); and each of the first and second components forming a longitudinal section of the body portion (215), with an interface between the first and second components extending substantially parallel to the longitudinal axis (219).

A monofilament bristle (200) is disclosed that comprises coextruded core (210) and sheath components (220). The sheath component (220) has an outer surface (218) and surrounds a first portion (215) of the core component (210). A second portion (216) of the core component (210) protrudes from a top terminal end (203) of the sheath component (220) to form an exposed tip portion (203). In one embodiment, the exposed tip portion (203) of the core component (210) has an outer surface (217) that includes friction-enhancing features. In another embodiment, the exposed tip portion (203) is tapered and has an outer surface (217) with a first roughness and the outer surface (218) of the sheath component (220) has a second roughness, the second roughness being greater than the first roughness In a further embodiment, the core component (210) has an outer surface (217) configured to have higher coefficient of friction than the outer surface (218) of the sheath component (220). In other embodiments, an oral care implement (100) including one or more of the monofilaments described herein is disclosed.

A filament for use in a brush implement comprises an external material and at least a first internal material. The filament includes an elongated flexible body having a length, a longitudinal axis, and a longitudinal outer surface comprising the external material, the elongated body terminating with a tip having a tip surface comprising the external material, wherein the tip surface has therein a plurality of craters distributed throughout the tip surface in a predetermined pattern, each of the craters having a surface edge of a predetermined size and a predetermined shape, walls extending longitudinally from the surface edge and comprising the external material, and a bottom comprising the at least first internal material and situated at a depth from the surface edge, the surface edge being formed by the walls and the tip surface.

An oral care implement that includes a handle and a head. Cleaning elements are coupled to the head and extend from the front surface of the head. At least one of the cleaning elements is a first type of cleaning element that extends from a first end to a second end along a longitudinal axis and has a polygonal transverse cross-sectional shape. The first type of cleaning element has an outer surface having a plurality of elongated faces and a plurality of elongated edges. The first type of cleaning element is formed from a first component and a second component, the first and second components being different in at least one characteristic. An interface of the first and second components is located along at least one of the elongated edges.

A mascara brush having a centre made of at least two wire sections twisted together along a longitudinal axis of the wire core, and having a bristle covering made of plastic bristles formed by filaments, each of which bristles is held in a clamping manner between the two wire sections, and which bristles are formed with a wedge-shaped bristle tip or without a wedge-shaped bristle tip on their free ends. At least one portion of the bristles has a bristle coating made of a first softer material, and a bristle core that is joined to the bristle coating and made of a second harder material, and at least these bristles have a transverse cut, in the form of a simple wedge, on one side or on two sides, at least partially on their radially outward free ends, and comprise a wedge-shaped bristle tip having at least one cut surface forming a wedge.