When should you re-evaluate SDF-treated teeth to assess whether the lesion is black, firm, or whether re-application is needed?

When should you re-evaluate SDF-treated teeth to assess whether the lesion is black, firm, or whether re-application is needed?

• A. 4-8 weeks after application
• B. 2-3 days after application
• C. 6-12 months after application
• D. 1-2 years after application

Answer: (A)

The main idea is that you re-evaluate after a short period to see if the lesion has arrested and hardened, which guides whether another SDF application is needed. Silver diamine fluoride works by killing bacteria and promoting a harder, arrested lesion that often turns black. This change doesn’t appear immediately; it becomes observable over several weeks. So checking at about four to eight weeks after the initial treatment gives a realistic picture of whether the caries has halted and whether another application is warranted. Evaluating only a few days after application won’t reveal arrest, and waiting many months or years may allow ongoing decay or miss the opportunity to reinforce the arrest with another application if needed.

The main idea is that you re-evaluate after a short period to see if the lesion has arrested and hardened, which guides whether another SDF application is needed. Silver diamine fluoride works by killing bacteria and promoting a harder, arrested lesion that often turns black. This change doesn’t appear immediately; it becomes observable over several weeks. So checking at about four to eight weeks after the initial treatment gives a realistic picture of whether the caries has halted and whether another application is warranted. Evaluating only a few days after application won’t reveal arrest, and waiting many months or years may allow ongoing decay or miss the opportunity to reinforce the arrest with another application if needed.