Interdental Cleaning Tool With Segmented Brush Groups

The cleaning portion is segmented into multiple brush groups (first, second, third, and fourth brush groups) with different bristle length configurations. Each brush group contains bristles of varying lengths that protrude differently from the cleaning portion body, allowing selective contact with teeth and gum surfaces during insertion and withdrawal movements. This segmentation enables diverse cleaning effects without requiring multiple separate tools.

Different regions of the cleaning portion are equipped with bristles having locally optimized properties. The first and third brush groups have bristles with shorter protruding lengths suited for gentle gum contact, while the second and fourth brush groups have bristles with longer protruding lengths for effective tooth surface cleaning. This local quality differentiation allows the single tool to provide varied cleaning sensations and effects.

The bristles in each brush group are arranged asymmetrically relative to the axial direction of the shaft portion. Instead of uniform radial alignment, the bristles protrude at angled orientations that intersect the axial direction. This asymmetric arrangement allows the bristles to effectively engage with both the facial and lingual surfaces of teeth and gum tissue during bidirectional movement, enhancing overall cleaning effectiveness.

The angled arrangement of bristles creates a three-dimensional cleaning pattern that conforms to the curved surfaces of teeth and gum. The intersecting angles allow bristles to contact surfaces from multiple directions, adapting to the natural curvature of oral anatomy and improving cleaning coverage on contoured tooth surfaces.