Method of producing a brush head, brush head and the use thereof for dental treatment

Abstract From the Canadian patent

A brush head for dental treatment is produced by the pressing together during heating of a long bundle of fibres (4) with parallel threads or fibres and a tool (1), said heating preferably being effected ultrasonically. The tool has a circular area (2) with a protruding tip or mandrel (3). There is thus formed a bottom plate (6) with a bottom hole (7) in the bundle of fibres (4), from which a suitable piece (5) is cut off and machined to form a pointed brush part (8), preferably with concave sharpening and rounded tip. The bottom hole (7) is so deep that it reaches the area where the concave sharpening (8) begins. With only a few operations it is possible to produce a brush head for dental …