Incredible But True Incredible But True Human World History Makers Cities Of The World Art And Music Sporting Headlines Plant Life Fish, Amphibians, Reptiles Birds and Mammals Creepy Crawlies Marine Life Restless Earth Earth's Secrets Changing Weather Seas And Oceans Comparisons Amazing Structures Machines And Man World Of Inventions Travelling Around Mysterious Universe	Dentures Date False teeth were made from ivory, porcelain or whalebone in the early 1800s. The dental plate was invented in 1817.   Previous: Back Book: Incredible But True Section: Incredible But True Chapter: World Of Inventions