The invention relates to a treatment element (30, 30, 30", 30") for use together with a dental implant part (2) introduced into the jawbone of a patient and a treatment system (90) comprising such a treatment element (30, 30, 30", 30") to a method by which the treatment element (30, 30, 30", 30") can be employed particularly favourably. According to the invention, for mechanical connection to the dental implant part (2) the main body (40) has a connection system adapted to said implant part and is provided with at least one media channel (56) for a cleaning fluid.