(1)tooth enamel is the hardest part of the human body.
(2)one quarter of adults in the us have lost all their teeth.
(3)teeth start to form before we are born.
(4)They're called wisdom teeth because they come in when you're older and wiser. 
Source
(5)we produce 100,000 gallone of saliva in a lifetime which helps prevent tooth decay by moving food away from teeth.
(6)tooth decay is the second most common disease after the cold. 
Source
(7)people prefer blue toothbrushes over red.
(8)a middle age custom was to kiss a donkey for toothaches
(9)we buy 18 yards of dental floss a year. We should buy 122 yards.
10 visiting the dentist at least twice a year is imperative for dental health.
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