The prevalence and severity of periodontal disease in Surrey schoolchildren.
D000293:Adolescent; D002648:Child; D003728:Dental Calculus / Q000453:epidemiology; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D009909:Oral Health; D010510:Periodontal Diseases / Q000453:epidemiology*; D010512:Periodontal Index; D012572:School Health Services; D014099:Toothbrushing