# Zirconia vs E-max Crowns: Strength, Looks and Lifespan

Source: https://vitasmile.istanbul/zirconia-vs-emax-crowns

Patient guide

Neither material is better for every tooth. Zirconia is the strongest dental ceramic, so it is often chosen for back teeth; e-max (lithium disilicate) is more translucent, so it often suits front teeth. Both last well: in a 2026 review, 96.8% of monolithic zirconia and 98.5% of monolithic lithium disilicate crowns were still in place after five years.

[Published by Vita Smile Dental Clinic](https://vitasmile.istanbul/about-us) October 5, 2026 Sources (6)

## Key takeaways

- Zirconia is the most robust of the dental ceramics; lithium disilicate glass-ceramics such as e-max are more translucent but weaker [4].
- In a 2026 review of 64 studies, five-year survival was 96.8% for monolithic zirconia, 97.3% for layered zirconia, 98.5% for monolithic lithium disilicate and 95.7% for layered glass-ceramic crowns [3].
- Monolithic crowns, made in one piece, had significantly fewer chips and fractures than crowns with a porcelain layer [3].
- Both materials wore the opposing enamel measurably in short-term clinical studies; polished surfaces did better than glazed ones [5].

Clinically reviewed by

[Dr. Vildan Aktamış](https://vitasmile.istanbul/our-doctors/dt-vildan-aktamis)

Prosthodontics & Aesthetic Dentistry · Restorative Dental Care

  Last reviewed October 6, 2026

  Sources 6 sources cited

The basics

## What are zirconia and e-max crowns?

A crown is a cap made to measure for one tooth; it covers the tooth and restores its shape, strength and appearance [2]. It can protect a weak tooth, restore a broken one or cover a dental implant [1]. Both zirconia and e-max are ceramics, so neither crown contains metal [2]. Our [dental crowns](https://vitasmile.istanbul/treatments/dental-crowns) page explains when a tooth needs a crown at all; this guide compares the two most common metal-free materials.

- Zirconia (zirconium oxide) is a polycrystalline ceramic and the most robust of the restorative ceramics [4]. Our [zirconium crowns](https://vitasmile.istanbul/treatments/zirconium-crowns) page covers it in depth.
- E-max is a brand of lithium disilicate, a glass-ceramic. It is more translucent than classic zirconia, but weaker [4]. At Vita Smile, e-max restorations use genuine IPS e.max by Ivoclar.

Both can be made in two ways. A monolithic crown is one solid piece of the material. A layered (veneered) crown has a core covered with porcelain for extra depth of colour, but two-layer crowns are vulnerable to chipping [4].

Strength and lifespan

## Which is stronger, and which lasts longer?

Zirconia is the stronger material [4]. In the mouth, though, both perform well. A 2026 systematic review pooled 64 clinical studies of single crowns on natural teeth and estimated five-year survival for each material [3]:

- Monolithic lithium disilicate (e-max type): 98.5% [3]
- Layered zirconia: 97.3% [3]
- Monolithic zirconia: 96.8% [3]
- Layered glass-ceramic (leucite or lithium disilicate): 95.7% [3]
- Metal-ceramic, for comparison: 97.1% [3]

The review found the survival of layered glass-ceramic crowns significantly lower than that of monolithic lithium disilicate crowns [3]. Monolithic crowns, whatever the material, had significantly fewer chips and fractures than layered ones [3].

Most studies report five-year results. Longer-term data on monolithic zirconia are still limited [6], so these figures describe groups of patients over five years, not a promise for one tooth.

- 98.5%

    of monolithic lithium disilicate crowns still in place after five years [3]
- 96.8%

    of monolithic zirconia crowns still in place after five years [3]
- 64

    clinical studies pooled in the 2026 review behind these figures [3]

Looks

## Translucency: which looks more natural?

Natural enamel lets some light through. Lithium disilicate glass-ceramics are more translucent than classic zirconia, which has a more opaque look [4]. That is why e-max is often preferred where a crown sits in the smile.

Zirconia has closed part of the gap. Newer, more translucent zirconias look closer to glass-ceramics, but the extra translucency comes at a cost: they are less strong and less tough than classic zirconia [4]. Layering porcelain over a zirconia core is another way to improve the look, at the price of a layer that can chip [3][4].

On front teeth the neighbouring teeth set the standard, so the shade and translucency are matched to them, whichever material is chosen.

Side by side

## Zirconia vs e-max crowns at a glance

Both are metal-free ceramics with strong five-year results [3]. The differences are strength, translucency, chipping and wear.

|  | Zirconia | Lithium disilicate (e-max) |
|---|---|---|
| Material | Zirconium oxide ceramic | Glass-ceramic |
| Strength | The most robust of the dental ceramics | Weaker than zirconia |
| Appearance | More opaque; translucent grades look more natural but are weaker | More translucent and lifelike |
| Often chosen for | Back teeth, where strength matters most | Front teeth, where appearance matters most |
| Survival at 5 years | 96.8% monolithic, 97.3% layered | 98.5% monolithic, 95.7% layered |
| Chipping | Fewer chips in monolithic crowns | Fewer chips in monolithic crowns |
| Wear on opposing teeth | Measurable enamel wear; polishing helps | Measurable enamel wear; polishing helps |

Survival and chipping: a 2026 systematic review of 64 clinical studies [3]. Strength and appearance: [4]. Wear: a 2026 review of nine clinical studies with 6 to 24 months of follow-up [5].

Front or back

## Which material suits which tooth?

The choice is made tooth by tooth, not once for the whole mouth.

- **Back teeth**Zirconia is often chosen, because it is the strongest option [4]. Monolithic zirconia avoids a porcelain layer that could chip [3].
- **Front teeth**E-max, layered zirconia or a translucent zirconia may blend in better [4]. In the 2026 review, zirconia crowns performed similarly on front and back teeth [3], so zirconia is not ruled out at the front.
- **Thin or worn teeth**Because zirconia is stronger, a zirconia crown does not have to be as thick, which means less tooth needs to be removed [4]. Any crown still needs the tooth to be shaped, and that cannot be undone [2].
- **Several or all teeth**See [full mouth zirconia crowns](https://vitasmile.istanbul/treatments/full-mouth-zirconia-crowns) or [full mouth porcelain crowns](https://vitasmile.istanbul/treatments/full-mouth-porcelain-crowns).

If only the look of healthy front teeth bothers you, a crown may not be needed at all: [e-max veneers](https://vitasmile.istanbul/treatments/emax-veneers) cover the front surface only.

Before you decide

## Chipping, wear and teeth grinding

Every crown has trade-offs. These are the ones that differ between the two materials:

- **Chipping**The most common technical problem with zirconia restorations was chipping of the porcelain layer [6]. Monolithic crowns of either material chip significantly less [3].
- **Wear on opposing teeth**A 2026 review of nine clinical studies found that monolithic zirconia and lithium disilicate crowns both caused measurable wear of the opposing enamel, while metal-ceramic did not cause significant wear; follow-up was only 6 to 24 months [5]. Mechanically polished surfaces did better than glazed ones, because glaze can wear away over time [5].
- **Teeth grinding (bruxism)**People who grind were rarely included in the studies, and the long-term effect of very hard zirconia on the chewing system is still unclear [6]. If you grind or clench, tell your dentist, so a night guard can be planned with the crown.
- **The tooth underneath**It can still decay at the crown edge, so brushing and cleaning between the teeth stay essential [2][6].

From our dentist

> “Which material is better has no answer until I know the tooth. Four things usually decide it: where it sits, how much of it is left, how the bite meets it and how much it shows when you smile. A back tooth that takes heavy chewing and a front tooth that catches the light often end up in different materials. If you grind your teeth, we plan protection for the crown before it is made.”

  [Dr. Vildan Aktamış](https://vitasmile.istanbul/our-doctors/dt-vildan-aktamis)  · Prosthodontics & Aesthetic Dentistry · Restorative Dental Care

At Vita Smile

## How crowns are planned at our clinic

Vita Smile is a dental clinic in Istanbul, licensed by the Turkish Ministry of Health and holding a health tourism authorisation certificate. Your dentist examines the tooth, gums and bite before recommending zirconia or e-max for each tooth, and your written quote is confirmed after that examination.

A crown takes at least two visits, with one to two weeks of laboratory work in between. E-max restorations use genuine IPS e.max by Ivoclar, and zirconia crowns made at Vita Smile carry a written 10-year warranty against manufacturing and workmanship defects, provided you attend your check-ups. This guide is reviewed by [Dr. Vildan Aktamış](https://vitasmile.istanbul/our-doctors/dt-vildan-aktamis).

Questions

## Zirconia vs e-max: frequently asked questions

Can't find your answer? Our coordinators are happy to help on WhatsApp.

[Ask on WhatsApp](https://wa.me/905434595095)

  Is e-max or zirconia better?Neither is better for every tooth. Zirconia is stronger, which suits back teeth; e-max is more translucent, which suits front teeth where appearance matters most [4]. In a 2026 review both reached high five-year survival: 96.8% for monolithic zirconia and 98.5% for monolithic lithium disilicate [3].

   Is zirconia stronger than e-max?Yes. Zirconia is the most robust of the restorative ceramics, while lithium disilicate glass-ceramics such as e-max are weaker but more translucent [4].

   Does e-max look more natural than zirconia?Usually, yes. Lithium disilicate is more translucent, while classic zirconia looks more opaque [4]. Translucent zirconia and layered zirconia narrow the gap, but translucent grades are less strong [4].

   Can zirconia crowns be used on front teeth?Yes. In a 2026 review, zirconia crowns performed similarly on front and back teeth [3]. On front teeth, a layered or more translucent zirconia can give a more natural look [4].

   Which crown is better if I grind my teeth?The evidence is thin: people who grind were rarely studied [6]. Monolithic crowns chip less than layered ones [3], and a night guard is often planned. Your dentist decides after checking your bite.

   Do zirconia or e-max crowns damage the opposite teeth?Both caused measurable wear of the opposing enamel in short-term clinical studies of 6 to 24 months [5]. A well-polished surface helps, because glaze can wear away over time [5].

Next steps

## Related treatments

### [Zirconium Crowns](https://vitasmile.istanbul/treatments/zirconium-crowns)

Zirconia as a crown material: types, strength and looks.

### [Dental Crowns](https://vitasmile.istanbul/treatments/dental-crowns)

When a tooth needs a crown and how all the materials compare.

### [E-max Veneers](https://vitasmile.istanbul/treatments/emax-veneers)

The glass-ceramic used where appearance matters most.

### [Full Mouth Zirconia Crowns](https://vitasmile.istanbul/treatments/full-mouth-zirconia-crowns)

Planning zirconia crowns for several or all teeth.

## Sources

Studies and patient guides this page is based on.

1. [1] [Crowns — MouthHealthy, American Dental Association](https://www.mouthhealthy.org/all-topics-a-z/crowns) · mouthhealthy.org
2. [2] [What are dental crowns? — Oral Health Foundation](https://www.dentalhealth.org/crowns) · dentalhealth.org
3. [3] [Pjetursson BE, Pitta J, Balet A, Bjarnadottir GR, Sailer I, Romandini P. A Systematic Review and Meta-analysis Evaluating the Survival, Failure, and Complication Rates of Metal-Ceramic, Veneered, and Monolithic All-Ceramic Tooth-Supported Single Crowns — Part 1. International Journal of Prosthodontics, 2026](https://doi.org/10.11607/ijp.9633) · doi.org
4. [4] [Zhang Y, Lawn BR. Novel Zirconia Materials in Dentistry. Journal of Dental Research, 2018](https://pmc.ncbi.nlm.nih.gov/articles/PMC5784474/) · pmc.ncbi.nlm.nih.gov
5. [5] [Rosa CDDRD, Bento VAA, Duarte ND, et al. Comparative Wear of Opposing Natural Enamel by Different Ceramic Materials in Fixed Dental Protheses: A Systematic Review and Meta-Analysis. Dentistry Journal, 2026](https://pmc.ncbi.nlm.nih.gov/articles/PMC12839585/) · pmc.ncbi.nlm.nih.gov
6. [6] [Laumbacher H, Strasser T, Knüttel H, Rosentritt M. Long-term clinical performance and complications of zirconia-based tooth- and implant-supported fixed prosthodontic restorations: A summary of systematic reviews. Journal of Dentistry, 2021](https://doi.org/10.1016/j.jdent.2021.103723) · doi.org