Incidence of the retrocuspid papilla.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003481:Cuspid; D005881:Gingiva / Q000002:abnormalities* / Q000033:anatomy & histology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn