99% Invisible-46- Vulcanite Dentures

<p>Before the 1850s, dentures were made out of very hard, very painful and very expensive material, like gold or ivory. They were a luxury item. The invention of Vulcanite hard rubber changed everything. It was moldable, it could be precisely … <a href="http://99percentinvisible.prx.org/2012/01/27/99-invisible-46-vulcanite-dentures/" rel="nofollow" target="_blank">Continue reading →</a></p>