The tongue is the main home of any bacteria in the mouth. Bacteria living on the tongue are likely to spread to your gums and teeth.
The back of the tongue is where as much as 80% of bad breath starts. This can then lead to gingivitis (inflammation of the gums) and tooth decay developing gradually. The importance of tongue cleaning cannot be emphasized enough as a way of preventing dental health problems. It should be incorporated into your regular oral hygiene routine.
A tongue cleanser is a good solution for getting rid of bacteria and stopping the development of any issues with your dental health in the process. It will eliminate bacteria that could harm your mouth, and keep your breath smelling good at the same time. Alternatively you can simply brush your tongue using your toothbrush.