The prevalence of malocclusion in adults is equal to or greater than what is documented in children.1 Studies in Sweden and the Netherlands have reported a prevalence of malocclusion of 40%–76% in adults. 2, 3 A study of US Army recruits reported that 77% had some malocclusion and required orthodontic treatment, and 16% had malocclusion rated as severe or handicapping.4 Additionally, the third National Health and Nutrition Examination Survey, which included a measure of occlusal relationships in its oral health component, showed that up to two-thirds of adults had some type of malocclusion.5, 6