What is the third principle of minimal intervention?

• A. Reduction in cariogenic bacteria to prevent future carious lesions
• B. Remineralization for early lesions
• C. Minimal restorative intervention
• D. Repairing rather than replacing defective restorations

Answer: (A)

Reducing the bacterial challenge is central because it tackles the cause of caries directly. By lowering cariogenic bacteria, you cut acid production, slow demineralization, and decrease the likelihood of new or progressing lesions. This preventive step creates the best conditions for other conservative approaches to work—such as remineralizing early lesions and applying minimally invasive treatments—while keeping the tooth structure intact. Although remineralization, minimal restorative intervention, and repair-versus-replace are important components of minimally invasive dentistry, actively reducing cariogenic bacteria addresses the underlying disease process and supports long-term conservative care.