Which two non-invasive MID strategies commonly used in MID are correctly paired with their purpose?

• A. Fluoride therapy to remineralize enamel; sealants to prevent fissure caries.
• B. Extraction to prevent caries
• C. Full veneer to restore aesthetics
• D. Laser therapy for whitening

Answer: (A)

Non-invasive strategies in minimally invasive dentistry aim to prevent decay and strengthen enamel without removing tooth structure. Fluoride therapy works by promoting remineralization and making enamel more resistant to acid attacks, helping early lesions regain minerals. Sealants provide a physical barrier on the grooves of biting surfaces, blocking plaque and bacteria from causing fissure caries. These two approaches are classic, widely used MID preventive tools because they preserve tooth structure while reducing caries risk. The other options involve procedures that are more invasive or not aligned with caries prevention or remineralization—extraction removes tooth material, a full veneer requires substantial tooth reduction for aesthetics, and laser whitening is a cosmetic treatment rather than a preventive or remineralization strategy.