Brushing part and method for manufacturing the brushing part

A method for manufacturing a brushing part, the brushing part comprising a support configured in a U-shape to be placed on a dentition of a jaw of a user, the support forming a mouth guard intended to receive on an internal side all or part of the dentition, the brushing part comprising at least one tuft of brushing bristles projecting on the internal side of the mouth guard by a free end of the brushing bristles of the at least one tuft of brushing bristles, the method comprising the following steps:

• providing the support, the support being drilled with at least one through hole, passing through the mouth guard formed by the support, between the internal side and an external side opposite to the internal side of the mouth guard;
• forming the at least one tuft of brushing bristles, by assembling a plurality of bristles by one end opposite the free end, so as to form a base of the at least one tuft of brushing bristles, such that a diameter of a section of the at least one tuft of brushing bristles, in a plane transverse to a direction of extension of the at least one tuft of brushing bristles, is greater than a diameter of the at least one through hole;
• merging ends of the plurality of bristles forming the base of the at least one tuft of brushing bristles so as to form a merged zone in one part, so that an extension of the merged zone in a direction transverse to the direction of extension of the at least one tuft of brushing bristles is greater than an extension of the base in the transverse direction before the merging step;
• forcefully inserting the at least one tuft of brushing bristles in the at least one through hole of the mouth guard formed by the support.