What is one of the most important risk factors for periodontal disease?

• A. Smoking and diabetes
• B. Regular dental visits
• C. Adequate fluoride intake
• D. Good nutrition

Answer: (A)

Smoking and diabetes are two of the most impactful influences on periodontal health because they directly impair the body's ability to fight infection, heal gum tissues, and control inflammation. Smoking reduces blood flow to the gums, alters the subgingival microbial environment, and weakens neutrophil function, all of which raise the risk of attachment loss and disease progression. Diabetes, especially when not well controlled, elevates systemic inflammation and causes changes in collagen and immune response that amplify tissue destruction in the periodontium. The combined effect of smoking and diabetes is especially strong, making periodontal problems harder to treat and more likely to recur.

Regular dental visits help prevent and monitor disease but don’t inherently increase risk; fluoride mainly protects against caries, not periodontal disease; and good nutrition supports overall health but isn’t as dominant a direct risk factor for periodontitis as smoking and diabetes. Focusing on quitting smoking and achieving good glycemic control yields the most significant improvement in periodontal outcomes.