A very serious part of good dental care is tongue scraping. It will make for really fresh breath and a healthy mouth cavity. You can buy a tongue scraper at almost any health store or you can use the edge of a spoon to get the same effect. Now simply scrape your tongue from back to front, rinsing the scraper with hot water each time. Repeat until the tongue is clean, normally that is after 2-3 times. Add one or two drops of an essential oil like peppermint or tea tree to make use of the synergy effect that essential oils provide when using them: They are always having several beneficial effects on your body and you can easily harvest that effect here, since the mucous membranes will take parts the essential oil and deliver it around the body.
Be well and see you around!