Which statement about sealant placement timing is correct?

• A. Sealants should be placed as soon as possible after eruption
• B. Sealants should always wait several years after eruption
• C. Sealants should only be placed after fluoride treatment
• D. Sealants should be delayed until no plaque is present

Answer: (A)

Sealants are most effective when applied soon after eruption because the pits and fissures are newly formed, clean, and easier to bond to. At this stage the enamel surface accepts etching well, allowing the resin to flow into the grooves and create a strong mechanical lock. This early timing provides the best retention of the sealant and the strongest barrier against caries before plaque can accumulate in the fissures. Waiting years would miss the period of highest vulnerability and reduce the preventive benefit, while requiring fluoride treatment first or waiting for no plaque isn’t necessary or practical—sealants can be placed on a clean, isolated tooth and fluoride can be used as an additional preventive measure if needed.