Here are 5 more interesting facts about teeth.

6. Your mouth produces over 25,000 quarts of saliva in a lifetime—that’s enough to fill two swimming pools. Saliva has many uses, including assisting you with your digestion and protects your teeth from bacteria in your mouth.

7. An average person spends 38.5 days brushing their teeth over their lifetime.

8. Many diseases are linked to your oral health, including heart disease, osteoporosis, and diabetes.

9. Two thirds of your tooth is underneath your gums (Root) —that means only one third of your tooth’s length is visible(Crown).

10. If you get your tooth knocked out, put it in milk and hold it in your mouth—this will help your tooth to survive longer. Make sure you see a dentist right away.