My Zahmärtztin recommended me this toothbrush to avert a painful periodontal disease treatment. Even after 4 weeks of intensive use 3-4x per day with the right toothpaste "Emmi Dent" visible results in Nachuntersucheung found and put the treatment on ice. Will support the whole with a good irrigator and Meridol dental rinse, also 3-4x a day, again morgends after getting up and after every meal and at bedtime, the procedure and the occasional flossing. Now I have no more problems with dental plaque gingivitis or halitosis. Work does not matter, but the alternative would be a painful treatment at the dentist and in 3-5 years. This is first hereby suspended. Sometimes I use even a soft toothbrush with toothpaste Meridol between. More can not be done really. Plaque I have not since. Thanks for the tips on my Zahnärtztin.