Blog
Emax vs zirconia crowns: which material is right for you?
Emax crowns offer superior aesthetics for front teeth. Zirconia crowns offer superior strength for molars and grinders. Full material comparison with Australian and Vietnam prices.
Emax (lithium disilicate ceramic) is the preferred material for front teeth and premolars where natural appearance matters most. It is translucent, closely mimics enamel, and is pressed in a laboratory to a very precise fit. Zirconia is harder and more resistant to fracture under heavy bite load, making it the stronger choice for molars and patients who grind. Both are excellent materials. The right choice depends on where the tooth sits in the mouth and how hard you bite.
Material comparison at a glance
| Property | Emax (lithium disilicate) | Monolithic zirconia |
|---|---|---|
| Aesthetics | Excellent — translucent, mimics enamel | Good — more opaque than Emax |
| Strength (flexural) | ~400–500 MPa | ~900–1,200 MPa |
| Best for | Front teeth, premolars | Molars, bruxers, posterior bridges |
| Stain resistance | Excellent | Excellent |
| Chipping risk | Low-moderate (higher under heavy load) | Very low |
| Typical thickness | 1.0–1.5mm | 0.5–1.0mm (stronger at less thickness) |
| Lab fabrication | Press technique — high precision | CAD/CAM milled — high speed, consistent |
AUD price comparison — Picasso vs Australian private
| Crown material | Picasso Vietnam (AUD) | Australian private (AUD) |
|---|---|---|
| PFM (porcelain fused to metal) | AUD 283 | AUD 1,500 – AUD 2,000 |
| Emax (lithium disilicate) | AUD 566 | AUD 1,800 – AUD 2,500 |
| Zirconia (monolithic) | AUD 679 | AUD 1,800 – AUD 2,800 |
Which material for which tooth
| Tooth position | Recommended material | Reason |
|---|---|---|
| Front incisors (1, 2) | Emax | Maximum translucency; visible at rest and when smiling |
| Canines (3) | Emax | High aesthetic visibility; reasonable bite load |
| First premolars (4) | Emax or zirconia | Borderline — depends on bite load and bruxism |
| Second premolars (5) | Zirconia | Higher bite load; less aesthetic visibility |
| First molars (6) | Zirconia | Highest bite load in the mouth |
| Second molars (7) | Zirconia | Highest bite load; least visible |
When zirconia is clinically essential
- Bruxism (teeth grinding) — if you grind at night, Emax crowns on posterior teeth carry a meaningful fracture risk. Zirconia’s superior strength tolerates the lateral forces of grinding. A nightguard is still recommended alongside any crown.
- Short clinical crowns — when the visible portion of the tooth is short (due to wear or anatomy), the crown must be thin to avoid over-contouring. Zirconia is stronger at reduced thickness.
- Implant crowns on posterior implants — implants do not flex like natural teeth; the crown absorbs more shock. Zirconia is the standard material for implant crowns in molar positions.
- Long-span bridges — three-unit bridges in the posterior require high flexural strength to withstand bite load across the span.
Layered vs monolithic zirconia
Monolithic zirconia: the entire crown is milled from one zirconia block. Strongest option. Slightly less aesthetic.
Layered zirconia: zirconia core with a thin layer of aesthetic porcelain fused on top. Better aesthetics than monolithic; more vulnerable to chipping at the surface layer than pure monolithic. More expensive.
For most Australian patients, monolithic zirconia is the appropriate choice for posterior teeth — it is stronger and the aesthetic limitation at molar positions is clinically irrelevant.
Emax for veneers vs Emax for crowns — the difference
IPS e.max (Ivoclar Vivadent) is the same base material for both veneers and crowns, but the processing differs:
- Emax veneers: thin wafers (0.3–0.5mm) pressed and bonded to the front surface of prepared teeth
- Emax crowns: full-coverage restorations (1.0–1.5mm thick) that encase the entire tooth
The material is the same; the preparation depth and tooth coverage is different. This is why Emax veneers preserve more tooth structure than Emax crowns — and why any clinic offering a “crown” at veneer prep depths is misrepresenting the procedure.
Related pages
- Crowns — procedure and AUD pricing
- Veneers — procedure and AUD pricing
- Veneers vs crowns — when each is appropriate
- Implant brands at Picasso
- Free AUD quote — specify crown material
Frequently asked questions
Which is more natural looking — Emax or zirconia?
Emax. Emax (lithium disilicate) is translucent in the same way natural enamel is. Light passes through it, producing the depth and internal colour variation of a real tooth. Standard monolithic zirconia is more opaque — it reflects light rather than transmitting it, which makes front teeth look artificial in some light conditions. Layered zirconia has improved aesthetics but at higher cost and with slightly reduced strength.
Which is stronger — Emax or zirconia?
Zirconia. Monolithic zirconia has a flexural strength of approximately 900–1,200 MPa compared to Emax at 400–500 MPa. For molars and patients who grind heavily, zirconia's fracture resistance is clinically significant. Emax crowns on molars in bruxers can chip or crack under high lateral bite load — this is the main clinical limitation of Emax.
Can I get Emax and zirconia crowns in the same treatment?
Yes — and this is the standard recommendation for smile makeovers. Front teeth (incisors and canines) receive Emax for maximum aesthetics. Molars and premolars with heavy bite load receive zirconia for durability. Picasso's treatment plan will specify the appropriate material per tooth.
Do zirconia crowns stain?
No. Zirconia is non-porous and does not absorb staining compounds from coffee, tea, or red wine. The crown surface itself is stain-resistant. However, the bonding margin (where crown meets tooth) can discolour if oral hygiene is poor — this is an enamel staining issue, not the crown material.