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How to Choose Dental Zirconia
March 25th 2025
How to Choose Dental Zirconia
Dental Zirconia (Y-TZP) Selection Guide: From Material to Clinical Adaptation
Dental zirconia has become a mainstream material for crowns, bridges, and implant prostheses due to its high strength, biocompatibility, and aesthetic properties. Selection should consider material performance, clinical needs, and processing techniques.
I. Selecting Zirconia Type Based on Clinical Needs
| Restoration Type | Recommended Zirconia Type | Key Considerations |
| Posterior Full Crowns/Bridges | 3Y-TZP (High-Strength) | Flexural strength (≥1200 MPa), wear resistance |
| Anterior Aesthetic Restorations | 4Y/5Y-TZP (High-Transluency ) | Light transmission (mimicking natural teeth), gradient layering effect |
| Implant Abutments | 3Y-TZP (Low bacterial adhesion surface treatment) | Biocompatibility, aging resistance (avoid low-temperature degradation) |
| Veneers/Thin Crowns | Ultra-Thin High-Transluency Zirconia | Maintains strength at <0.3 mm, no need for veneering porcelain |
II. Key Performance Parameter Comparison
| Parameter | 3Y-TZP | 4Y-TZP | 5Y-TZP |
| Flexural Strength (MPa) | 1200–1400 | 800–1000 | 500–700 |
| Light Transmission (%) | 20–30% (Low) | 35–45% (Medium) | 45–55% (High) |
| Fracture Toughness (MPa·m¹/²) | 5–7 | 4–5 | 3–4 |
| Minimum Thickness | ≥0.5 mm | ≥0.3 mm | ≥0.2 mm |
Note: 5Y-TZP’s translucency is close to glass ceramics (lithium disilicate) but has lower strength—avoid long-span posterior bridges.
