How long can a properly placed sealant last?

The longevity of a properly placed dental sealant can typically range from 5 to 10 years, making the option that states this duration the most accurate. Sealants are designed to protect the occlusal surfaces of teeth by sealing grooves and pits that are vulnerable to decay. Over time, with normal wear and tear, the sealant may wear down or become partially displaced, which can reduce its effectiveness.

Proper technique during placement, including cleaning and etching the tooth surface, along with good oral hygiene practices by the patient, can contribute to the extended durability of sealants. It's important to have sealants checked regularly during dental visits to ensure that they are still intact and functioning effectively, which also influences how long they actually last in practice.

Options suggesting durations either shorter than 5 years or longer than 10 years do not accurately reflect the typical lifespan based on current dental research and clinical practices. Therefore, the range of 5 to 10 years aligns well with established guidelines and real-world outcomes for dental sealants.