Here are a few fun facts about teeth that I bet you didn’t know. 

1. According to the American Academy of Periodontology, 50% of respondents surveyed said that a smile is the first feature they notice about another person.
2. U.S. consumers buy 14 million gallons of toothpaste each year!
3. Most adults have 32 teeth. Though minuscule in size comparison, mosquitoes have about 47 teeth, and snails have about 25 teeth . . . on their tongues.
4. Your tooth enamel is the hardest part of your entire body.
5. Teeth start to form even before birth. Milk teeth, or baby teeth, start to form when a baby is in the womb, but teeth don’t begin to show until a child is between six and twelve months old.
6. Humans have two sets of teeth during their lifetime, while sharks have around 40 sets of teeth.
7. Your mouth produces over 25,000 quarts of saliva throughout your life. That’s enough to fill two swimming pools! Saliva protects your teeth from bacteria in your mouth.
8. The average person spends 38 days brushing their teeth during their lifetime.
9. One third of your teeth are underneath your gums.
10. Modern toothpaste has only been available for the past hundred years. Before this invention, humans used charcoal or ground chalk, ashes, lemon juice, and honey-tobacco mixtures to clean their teeth!