Vegetables and fruits rich in cellulose: including apples, carrots and celery. These vegetables and fruits help to secrete a lot of saliva. Saliva can not only moisten the mouth, but also remove food residues attached to teeth or stuck between teeth. These food residues are also one of the causes of oral odor.

Foods containing a lot of vitamin C: berries, oranges, watermelons and other foods containing a lot of vitamin C can form an environment that is not conducive to the growth of bacteria in the oral cavity. Regular intake of vitamin C is also very beneficial to gum health. However, it should be noted that vitamin C should be taken from natural foods, not food additives, because additives may cause digestive disorders.