It is very juicy in its taste. Mismak is a twig of neem tree when chewed it tastes juicy .This juice is bitter,which is actually contains tannic acid. This stimulates salivation and thus there will be a better cleansing effect. The twig has to be chewed in the mouth for about 15-30 minutes. This bitter juice acts as an anticariogenic agent.
Tannic acid acts as an astringent.
In Datun Gurectan is a antibacterial powerful tannic acid. After chewing fibres are used on the tooth surface in the form of a brush. These will be dry after 72 hours and then will be of no use. The oral aspects cannot be cleaned. Fibrous elements of datun atre not stiff and cannot reach in all the sulcus areas.