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Incisor Crowding in Untreated Persons 15–50 Years of Age：United States，1988–1994
Incisor Irregularity NHANES III Adults Epidemiology
2008/12/19
The purpose of this study was to (1) describe the prevalence of mandibular incisor irregularity (II) among untreated adults in the United States and (2) evaluate the factors explaining individual ...