Oklahoma Pit and Fissure Sealants State Practice Exam

How does an etched surface appear?

1. Smooth and shiny

2. Frosty and chalky

3. Opaque and yellowish

4. Dark and glossy

The correct answer is: Frosty and chalky

An etched surface is treated to create micro-abrasions that increase the surface area and enhance the mechanical retention of materials applied to it, such as sealants or adhesives. This process generally yields a texture that looks frosty and chalky. The frosty appearance is due to the increased roughness and the alteration in how light reflects off the surface, making it look less shiny and more diffuse. This characteristic is essential for ensuring that the sealant can bond effectively to the tooth structure, providing a successful and lasting application. The other descriptions fail to represent the nature of an etched surface because they suggest characteristics not associated with the rough, increased surface area created through etching.