The vapors style orientation components which direct the air style the liquid film which is made source of the air which is made in specified speed (10), and, by landing before the fluid liquid drop of the high speed (19) vis-a-vis the range on the tooth which it possesses in the upper part (15) it possesses the washing system of the fluid liquid drop. Performance of the fluid liquid drop in the range where speed of the air style, in order to decrease the thickness of the liquid membrane substantially, sufficiently is high, therefore purity on the tooth is done is raised.流体液滴の洗浄システムは、所定の速度において作られる空気の源(10)、及び、高速の流体液滴の前の着地によって作られる液体フィルム(19)を上方に有する歯上の範囲に対して空気流を方向付ける気体流配向部材(15)を有する。空気流の速度は、液体膜の厚さを大幅に低減するよう十分に高く、従って歯上の清浄された範囲における流体液滴の効率性を高める。
