title: Effects of smoking on periodontal disease can be reversed, study finds.
mesh_terms: D000328:Adult; D004198:Disease Susceptibility; D006801:Humans; D010510:Periodontal Diseases / Q000517:prevention & control*; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*; D016540:Smoking Cessation; D000074606:Smoking Prevention