Just over the border in Guatemala, photographer David Dennis spotted this jade-adorned skull [1]: "At the height of Mayan civilization, body modification included a variety of alterations of the teeth. Teeth were sharpened to points, or into the letter 'T' to represent the wind-glyph, and green jade was inlaid to 'purify breath or express elegant speech.' Other minerals inserted into teeth included iron pyrites, hematite, turquoise, quartz, serpentine, and cinnabar." [LINK]-> [2]
Links:
[1] http://www.flickr.com/photos/davidden/86336364/
[2] http://tywkiwdbi.blogspot.com/2009/03/jaded-smile.html