Interdental brush

摘要

Provided is an interdental brush having a wire and filaments arranged therein by folding the wire and disposing the filaments between the wire and then twisting the wire. The interdental brush has improved filament retention and improved cleaning effectivity and reachability to minute portions. Each of filaments 3 has a polygonal cross section whose at least one corner portion has an interior angle 31 as acute as 30 to 75 degrees. Specifically, an angle θ3 of the acute corner portion 31 is set at 1.2 to 3 times a twisting angle θ4 of the wire. The filaments each have two or more such acute corner portions, and two or more rows of such filaments are disposed and laminated between the wire in a densely arranged manner.

主权项

1. An interdental brush, comprising:
a brush portion, the brush portion having a wire and filaments arranged therein by folding the wire and disposing the filaments between the wire and then twisting the wire, wherein the filaments each have a polygonal cross section; wherein at least one interior angle of the polygonal cross section has an acute angle of 30 to 75 degrees; wherein a twisting angle of the wire is 25 to 40 degrees, and wherein the polygonal cross sections of at least half of the filaments arranged in the brush portion are densely arranged.