Tooth modification has been practiced throughout many time periods and places to convey information about individual people, their societies, and their relationships to others. This volume represents the wide spectrum of intentional dental modification in humans across the globe over the past 16,000 years. These essays draw on research from the Americas, Africa, Asia, Oceania, and Europe. Through archaeological studies, historical and ethnographic sources, and observations of contemporary people, they examine instances of tooth filing, inlays, dyeing, and removal. Contributors discuss how to distinguish between purposeful modifications of teeth and normal wear and tear or disease. This collection demonstrates what patterns of tooth modification can reveal about people and their cultures in the past and present.