Biracial study of the maxillary midline diastema.
D000293:Adolescent; D000367:Age Factors; D044383:Black People; D002648:Child; D003970:Diastema / Q000453:epidemiology*; D006801:Humans; D008437:Maxilla / Q000033:anatomy & histology; D012494:Sampling Studies; D012737:Sex Factors; D012959:Socioeconomic Factors; D013714:Tennessee; D044465:White People; D001741:Black or African American