Prevalence of ankylosis of primary molars in different regions of the United States.
D000844:Ankylosis / Q000453:epidemiology*; D002648:Child; D005260:Female; D005457:Fluoridation; D006801:Humans; D008297:Male; D008963:Molar / Q000473:pathology*; D012189:Retrospective Studies; D012737:Sex Factors; D014076:Tooth Diseases / Q000453:epidemiology; D014094:Tooth, Deciduous / Q000473:pathology*; D014481:United States