Implants · single question
Why is zirconia resistant to CORROSION compared to titanium?
Show answer and explanation
Correct answer: B. Zirconia is a ceramic (metal oxide) — no metal ions to release or corrode; intrinsically corrosion-free
✓ B) Zirconia is a ceramic (ZrO₂ — zirconium oxide) — no metallic ions to corrode.
Zirconia (Y-TZP): is ZIRCONIUM DIOXIDE — a metal oxide CERAMIC. Unlike metallic titanium which can (rarely) release metal ions (causing local tissue reactions, especially in metal-sensitive patients), zirconia is chemically inert. No galvanic corrosion, no metal ion release, no discoloration of peri-implant tissues (titanium oxide can cause grey tissue tinting). This makes zirconia particularly advantageous in: thin gingival biotypes (no dark show-through), patients with metal sensitivity, patients who want all-white/metal-free restorations.
Zirconia (Y-TZP): is ZIRCONIUM DIOXIDE — a metal oxide CERAMIC. Unlike metallic titanium which can (rarely) release metal ions (causing local tissue reactions, especially in metal-sensitive patients), zirconia is chemically inert. No galvanic corrosion, no metal ion release, no discoloration of peri-implant tissues (titanium oxide can cause grey tissue tinting). This makes zirconia particularly advantageous in: thin gingival biotypes (no dark show-through), patients with metal sensitivity, patients who want all-white/metal-free restorations.