Orthodontic economics. Population.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001723:Birth Rate; D002648:Child; D003710:Demography; D005260:Female; D006801:Humans; D008875:Middle Aged; D009970:Orthodontics / Q000191:economics / Q000639:trends*; D011153:Population; D014481:United States