Secondary prevention occurs in which period of caries development?

• A. Pre-pathologic
• B. Early pathogenesis
• C. Late pathogenesis
• D. Post-pathologic

Answer: (B)

Secondary prevention is about stopping a disease in its tracks after it has already begun, aiming to halt progression and even reverse early damage. In caries, that means acting once demineralization has started but before a cavity forms. This corresponds to the early pathogenesis stage, when enamel subsurface mineral loss creates white-spot lesions but the structure is still intact enough to be remineralized. At this point, interventions like fluoride therapy, proper oral hygiene, dietary control, and remineralization aids can arrest progression and potentially restore mineral content. If you wait until late pathogenesis or post-pathologic stages, the damage is more advanced or cavitated, and reversal is unlikely, shifting the focus to restorative treatment rather than prevention.