Zirconia Crown Cementation — NDEB AFK MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: C — Self-adhesive resin cement
Self-adhesive resin cements (e.g., RelyX Unicem, Panavia SA) are well-suited for zirconia crowns. Traditional acid etching and silane coupling (used for glass-ceramic bonding) do not work on zirconia because it is a polycrystalline ceramic without a glass phase. Self-adhesive resin cements bond via chemical adhesion (phosphate monomers like MDP bonding to zirconia's oxide surface). Alternatively, RMGIC can be used for conventional cementation if adequate retention form exists.
Reference: Anusavice – Phillips' Science of Dental Materials, 13th ed., 2022