Teenage smoking may cause periodontal disease.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008297:Male; D017622:Periodontal Attachment Loss / Q000209:etiology; D010510:Periodontal Diseases / Q000209:etiology*; D015995:Prevalence; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*; D013997:Time Factors