Restorative & Materials · single question
Enamel microabrasion is performed using which agent?
Show answer and explanation
Correct answer: A. Hydrochloric acid (with abrasive, e.g., pumice)
- A. Correct. Microabrasion uses hydrochloric acid combined with an abrasive (e.g., Opalustre — 6.6% HCl with silicon-carbide/pumice particles) to remove superficial enamel discoloration.
- B. Phosphoric acid (~37%) is an etchant for bonding, not the microabrasion agent.
- C. Hydrofluoric acid is used to etch porcelain/ceramic intaglio surfaces, not enamel microabrasion.
- D. Citric acid is not the standard microabrasion agent.
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