What is the second principle of minimal intervention?

• A. Early diagnosis/Caries Risk Assessment
• B. Remineralization for early lesions
• C. Reduction in cariogenic bacteria to prevent future carious lesions
• D. Repairing rather than replacing defective restorations

Answer: (B)

Remineralization of early lesions is a central focus in Minimal Intervention Dentistry. When caries only reach the outer enamel without a cavity, the goal is to halt progression and even reverse the lesion by redepositing minerals into the demineralized enamel. Fluoride is key here because it accelerates remineralization and forms fluorapatite, which is more resistant to acid attacks; saliva supplies calcium and phosphate, and additional remineralizing agents like CPP-ACP can help boost mineral availability. In practice, this means applying topical fluoride therapies, using fluoride toothpaste regularly, managing diet to reduce acid challenges, and promoting good salivary flow. Preserving tooth structure is the aim, so remineralization allows the tooth to stay intact and functional rather than undergoing drilling or restoration. Other ideas mentioned relate to prevention or to treating more advanced lesions, but they don’t embody the noninvasive reversal of early caries that this principle targets.