Composite Resin Restoration Assist · CDA

What is the purpose of acid-etching enamel (and/or dentin) before applying composite resin?

To sterilize the exposed cavity surface
To create microporosities for bonding
To enlarge the cavity for better material adaptation
To shift the tooth shade to match the composite

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Correct answer: To create microporosities for bonding

Acid etching roughens the enamel (or dentin) surface microscopically, allowing the bonding agent to penetrate and form a strong micromechanical bond with composite resin.

Difficulty: Medium Question 3 of 22

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