Head and oral care device for oral care device

摘要

Problem: to maintain good health condition of the oral cavity to keep it well.The head for the oral care device comprises a filament bundle 96 of a first type of filament and a hair bundle 16 of a second type of filament.A first type of hair bundle 96 is disposed at the inner portion of the head and comprises a plurality of filaments, each filament having a longitudinal axis and a substantially circular cross-sectional area extending in a plane substantially perpendicular to the longitudinal axis.The second type of hair bundles 16 are disposed at the outer perimeter of the head and comprise a plurality of filaments, each filament having a longitudinal axis and a substantially cross shaped cross section extending in a plane substantially perpendicular to the longitudinal axis The cross shaped cross section has four projections and four channels, and the projections and channels are alternately arranged.The second type filament bundle 16 has a packing rate within the range of about 40% to about 55%.Diagram