* it takes 17 muscles to smile BUT 43 to frown!
* the average person produces a quart of saliva daily!
*like our finger prints, everyone’s tongue print is different!
* tooth enamel is the hardest part of our bodies, even harder than our bones!
* your tongue is the only muscle in our body that is NOT attached to something at both ends!
* the first toothbrush was introduced in China in 1498. The bristles were stiff hairs from a pig!
* Leonardo da Vinci is thought to be the first person to sketch and describe the structure of teeth!
* it was customary during the middle ages to kiss a donkey if you had a toothache!
* people prefer blue toothbrushes to red ones!
* a mosquito’s proboscis has 47 sharp edges (mosquito teeth) on its tip to help cut through skin. They are not used to chew since blood is already in liquid form!