The history of creation of tools for removal of dental sedimentation.
Moscow Regional Clinical Scientific Research Institute In article data on evolution parodontal tools are submitted: home-made in ancienty up to modern. Scrapers Abul Kasim az-Zahravy (XI c.), the excavators P. Fauchaurd (XVIII c.), the first zonespecific tools J. Snell (XIX c.), Klaton Gracey curetes are in detail described (XX c.). Technigues of removal of dental sedimentation of W.D. Miller (1998), F.A. Zverzhhovskiy (1910), stages of modern professional hygiene are reflected.