Assertion: bristle's cross section | /r/SimilarTo | splined shaft
Facets:
Source sentences:
text: In order to achieve a stronger abrasive effect with the outer surface of the tooth cleaning bristles, the tooth cleaning bristle, according to an alternative, likewise preferred embodiment of the invention, can have a cross section which is roughly like a splined shaft and in which, on the outer surface of the tooth cleaning bristle, in the peripheral direction, crenelated projections alternate with approximately U-shaped depressions or grooves.