Regular use of the tongue cleaner reduces the amount of plaque-forming micro-organisms in saliva so that the amount of plaque on teeth is reduced up to a third. Indirectly, regular tongue cleaning can protect against cavities.
How do I use the tongue cleaner? In the first phase, brush several times with light pressure from the back to the front of the tongue. Be careful that you don't go too far back, this may cause you to gag. In the second phase, turn the tongue cleaner around to the other side and use the scraper, also from the back to the front. This then removes the loosened film.