Prevalence of malocclusion and orthodontic treatment need in the United States: estimates from the NHANES III survey.

摘要: Data from the third National Health and Nutrition Examination Survey (NHANES III) provide a clear picture of malocclusion in US population. Noticeable incisor irregularity occurs majority all racial/ethnic groups, with only 35% adults having well-aligned mandibular incisors. Irregularity is severe enough 15% that both social acceptability function could be affected, major arch expansion or extraction some teeth would required for correction. About 20% population have deviations ideal bite relationship; 2% these are to disfiguring at limit orthodontic In Mexican-Americans compared rest population, Class II III malocclusions more prevalent, but deep open less prevalent. Application Index Treatment Need survey data reveals 57% 59% each group has least degree treatment need. Over 30% white youths, 11% Mexican-Americans, 8% blacks report receiving treatment. Severe observed frequently among blacks, which may reflect their lower level much frequent higher income approximately 5% those lowest 10% intermediate groups being treated.