What is the current regulatory status of silver diamine fluoride regarding caries arrest use?

What is the current regulatory status of silver diamine fluoride regarding caries arrest use?

• A. Not regulated by FDA
• B. Cleared as a class II device for hypersensitivity and fast-tracked for caries arresting use
• C. Fully approved as a dental drug
• D. Regulated as a cosmetic product

Answer: (B)

The key idea is how the FDA categorizes and approves dental products. Silver diamine fluoride is not approved as a dental drug for caries arrest in the United States. What exists publicly is FDA clearance as a Class II medical device for a specific use—hypersensitivity relief—and an expedited path being pursued for a caries-arrest indication. This means the FDA has deemed the product suitable for a device indication tied to sensitivity and is considering a faster route to clearance for caries arrest, but it does not mean full drug approval for that use. It is not regulated as a cosmetic product. In practice, clinicians may use SDF off-label for caries arrest, but that use isn’t the officially approved labeling.

The key idea is how the FDA categorizes and approves dental products. Silver diamine fluoride is not approved as a dental drug for caries arrest in the United States. What exists publicly is FDA clearance as a Class II medical device for a specific use—hypersensitivity relief—and an expedited path being pursued for a caries-arrest indication. This means the FDA has deemed the product suitable for a device indication tied to sensitivity and is considering a faster route to clearance for caries arrest, but it does not mean full drug approval for that use. It is not regulated as a cosmetic product. In practice, clinicians may use SDF off-label for caries arrest, but that use isn’t the officially approved labeling.