The reasons for bad breath are not entirely known. It is known, however, that it can be caused by food residues subject to microbial action. A lot of the bacteria are accumulated on the tongue. It is interesting that on the tongue there are more bacteria than on any other part of the human body! That’s why oral hygiene is so important and cleaning the tongue can reduce the risk of bad breath. To clean the tongue you can use a manual toothbrush or one electric toothbrush. Your hygienist, dentist can recommend you a toothbrush which suits your individual needs.