I'm just dipping into Bhikkhu Bodhi's translation of the Anguttara Nikaya - The Numerical Discourses of the Buddha - and am interested to see that there was no aspect of ordinary life that could not benefit from advice from the Blessed One.
Here is his advice on good mouth hygiene:
‘’Bhikkhus, there are these five dangers in not brushing ones’ teeth. 
What five? It is bad for one’s eyes; one’s breath stinks; one’s taste buds are not purified; bile and phlegm envelop one’s food; and one’s food does not agree with one.
These are the five dangers in not brushing one’s teeth.
‘’Bhikkhus, there are these five benefits in brushing one’s teeth. What five? It is good for one’s eyes; one’s breath does not stink; one’s taste buds are purified; bile and phlegm do not envelop one’s food; and one’s food agrees with one. These are the five benefits in brushing one’s teeth. 
Page 822 Numerical Discourses of the Buddha, translation of the The Anguttara Nikaya by Bhikkhu Bodhi
Note 1216: Dantakatthassa akhadane, lit. ‘’in not chewing on toothwood’’. In the Buddha’s time people cleaned their teeth by brushing them with sticks of medicinal wood such as neem, sharpened at one end and made brush-like at the base. This practice is still observed in rural India as well as in monasteries in southern Asia.
The Numerical Discourses of the Buddha, Anguttara Nikaya, Book of Fives p.822 (translated from the Pali by Bhikkhu Bodhi).
---The trouble is that you think you have time---
---Worry is the Interest, paid in advance, on a debt you may never owe---
---It's not what happens to you in life that is important ~ it's what you do with it ---