* 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!