Patent ID: 8677545

Claim:
A toothbrush comprising a cleaning element formed as a plastic injection molding part, that has an attachment segment for attachment in a head region of the toothbrush and a cleaning segment formed essentially as a rectangular fin, the cleaning segment having an upper end, a first broad side and an opposing second broad side, said first and second broad sides defining a thickness therebetween, and a wavelike region in the region of the cleaning segment, around which the cleaning segment has an increased bending flexibility, wherein the wavelike region is formed from a first indentation extending from the first broad side towards the second broad side and a second indentation positioned either below or above the first indentation and extending from the second broad side towards the first broad side, and wherein the first indentation extending from the first broad side has a corresponding bulge on the second broad side and the second indentation extending from the second broad side has a corresponding bulge on the first broad side, and wherein the thickness defined between the first and second broad sides decreases through the wavelike region towards the upper end of the cleaning segment.