Light-cured sealants require

Light-cured sealants require

• A. Water bath
• B. Air-drying
• C. Curing light
• D. Ultrasonic activation

Answer: (C)

Light-cured sealants rely on a light-activated polymerization process. These resins contain a photo-initiator that responds to blue light from a curing unit, generating free radicals that link the monomers into a solid polymer. This rapid curing creates a durable seal at the tooth surface when the material is exposed for the recommended time. Without the curing light, the sealant remains unpolymerized and can wash away or wear off, defeating the purpose of sealing pits and fissures. A water bath, air-drying alone, or ultrasonic activation does not initiate this polymerization, so they are not appropriate curing methods for light-cured sealants.

Light-cured sealants rely on a light-activated polymerization process. These resins contain a photo-initiator that responds to blue light from a curing unit, generating free radicals that link the monomers into a solid polymer. This rapid curing creates a durable seal at the tooth surface when the material is exposed for the recommended time. Without the curing light, the sealant remains unpolymerized and can wash away or wear off, defeating the purpose of sealing pits and fissures. A water bath, air-drying alone, or ultrasonic activation does not initiate this polymerization, so they are not appropriate curing methods for light-cured sealants.