Why Is the Etchant or Conditioner Applied on the Occlusal Surface

question 24

Multiple Choice

Why is the etchant or conditioner applied on the occlusal surface 2 to 3 mm beyond the area to be sealed?

• A) To prevent fracture of the sealant and possible microleakage.
• B) To ensure coverage of the tooth.
• C) To make room for buffing after the sealant process.
• D) Because there is shrinkage of the material after application.

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Definitions:

Phospholipid

A type of lipid molecule that is a major component of all cell membranes, known for its polar head and nonpolar tail structure.

Cell Membranes

Semi-permeable barriers that enclose the cytoplasm of a cell and regulate the passage of substances.

Triglyceride

Neutral fat composed of glycerol and three fatty acids; typically involved in energy storage.

Alpha Helix

A common motif in the secondary structure of proteins, characterized by a spiral shape held together by hydrogen bonds.