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.
The Human Stain: A Deep History of Tattoo Removal
European and indigenous Americans being judged at the court of Nature for modifying their bodies, from the frontispiece to John Bulwer's Anthropometamorphosiss, 1656 (via The Atlantic)
Mayan mask - Idea for an inspiration of Mayan for my collection, Repin Mayas usaban muchas máscaras artísticas