The invention refers to a method for the at least partial determination of a movement pattern of a dental treatment means, in particular tooth cleaning, resulting during a dental treatment and comprises at least the steps:Moving the dental treatment means at least in a x-/y-plane for the treatment of surface parts of the teeth, wherein by means of an optical detection device data are recorded with respect to at least one motion parameter, in particular the movement direction or −rotation, the acceleration, the path and/or the velocity, of the dental treatment means with respect to a reference system moving with the head of the treated person and providing the recorded data to a processor device for the determination of the movement pattern.