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Restorative & Materials · single question

What is the correct sequence to repair a chipped porcelain veneer with composite? (1=Silane / 2=Air abrasion / 3=HF acid etch / 4=Composite)

  1. 1, 2, 3, 4
  2. 2, 3, 4, 1
  3. 2, 3, 1, 4
  4. 3, 2, 1, 4
Show answer and explanation

Correct answer: C. 2, 3, 1, 4

Correct sequence: (2) Air-abrade with aluminum oxide for micromechanical retention u2192 (3) Apply HF acid etch to create micropores u2192 (1) Apply silane coupling agent u2192 (4) Apply bonding agent and composite. Silane MUST follow etching to chemically couple composite to porcelain.

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