Fluoride pit and fissure sealants belong to which generation?
High-Yield Explanation
TYPES OF PIT AND FISSURE SEALANTS
1. Based on curing method:
First generation:
Polymerized with ultraviolet light of 350 nm wavelength.
Absorbs UV light excessively and prevents complete polymerization of the sealant.
Light intensity varies from lamp to lamp.
Second generation:
Self-cured or chemically cured.
Most of them were unfilled.
Can be transparent, opaque or tinted.
Filled show increased wear and abrasion resistance than unfilled.
Third generation - Visible light cured of 480-490 nm wavelength.
Fourth generation - With addition of fluoride for added benefit.
Soben Peter
5th edition
Page no. 440