The occurrence of calculus in normal children, children with cystic fibrosis, and children with asthma.
D000293:Adolescent; D001249:Asthma; D002118:Calcium / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis; D003728:Dental Calculus / Q000453:epidemiology*; D006801:Humans; D010758:Phosphorus / Q000032:analysis; D012463:Saliva / Q000032:analysis; D013363:Submandibular Gland
D010758:Phosphorus; D002118:Calcium