It's also important for maintaining the integrity of teeth and the supporting bone structure in its capacity to regulate and channel calcium into bones and teeth. Tea tree oil, used as an oral rinse, has been proven to kill bacteria. Both gotu kola and vitamin E help to heal wounds and promote connective tissue growth, as well as fight free radicals. Goldenseal is another medicinal plant that boosts immune function. Myrrh oil boasts antibacterial and anti-fungal properties, and is also know to tighten gums and ward off pyorrhea.
Chamomile is a mild anti-microbial, as is red thyme oil.
Finally, ingredients such as parsley, spearmint, menthol and eucalyptus are stimulating to the gums, as well as proving refreshing and cooling for the mouth in general.