From Hello Kitty crowns to sculptures made of diseased teeth, the dental innovations we’ve featured on Trend Hunter are truly outrageous.

We often take for granted how important our teeth are—they allow us to eat, bite and, of course, smile. But did you ever think about your teeth as works of art? The range of themed crowns is incredible for those who still have their chompers, but for those who don’t, the options are still endless. While some people get gemstone-embedded dentures, others make art with teeth that have fallen out.

Check out this cluster for the strangest dental innovations we’ve featured to date.