Look at this wonderful ivory carving, called "The Toothworm as Hell's Demon", from 18th century France. Apparently the idea of toothache being caused by a Toothworm has its origins in Mesopotamia. More info at Honeyed.
I remember falling about laughing when I learned that the Hungarian word for dentist is "fogorvos ", literally "tooth-doctor". It makes perfect sense, but tooth-doctor sounds so quaint in English. I really want to make a t-shirt with "Fogorvos vagyok" (I am a dentist) on the front.
Cast Human Tooth Ring by vanderglas on Etsy
My friend Polly Van der Glas makes rather amazing jewellery inspired by or using teeth and hair. Have a look at her tooth rings and beautiful hair bracelets on Etsy.
Claudia Cembrowicz, a fine arts student from Bristol, decided carve her wisdom teeth into the shape of fairies after having them extracted. She said "When I held [my teeth] I realised what a powerful material they were and decided to work with them - and the first thing that sprang to mind was the Tooth Fairy. She symbolised both sanctuary and reward, arriving as a blessing after a period of pain." Apparently it took her about 20 hours with a specially adapted drill and rotary cutter to sculpt each tooth.