Material guide

Zirconia vs e.max vs PFM: choosing the right crown material

Rule of thumb from our bench: prescribe e.max for anterior esthetics and veneers, zirconia for posterior strength, bridges and bruxers, and keep PFM for the proven, versatile middle ground — or combine them with e.max layered over a zirconia core.

	Zirconia	IPS e.max	PFM
Best at	Posterior strength, bridges, bruxers	Anterior esthetics, veneers	Proven versatility, any position
Esthetics	Good — improving every generation	Excellent translucency	Good; metal collar possible
Strength	Highest (monolithic)	High for anterior loads	High — decades of clinical history
Metal-free	Yes	Yes	No (that's the point)
Our turnaround	7 days	7 days	8 days

When should I prescribe zirconia?

Posterior crowns and long-span bridges under real occlusal load, patients who brux, and any case where you want monolithic durability with no metal. Modern zirconia is esthetic enough for most visible work, and for a posterior case that still has to look anterior we can layer e.max over a zirconia core.

When is e.max the better call?

Anterior crowns, veneers and inlays where translucency decides the case. Lithium disilicate remains the esthetic standard for the smile line. We press and mill it as e.max press, e.max CAD and e.max veneer, plus OPC press and OPC veneer.

Is PFM still worth prescribing?

Yes — porcelain fused to metal has decades of clinical history, forgiving conventional cementation, and an alloy for every situation: non-precious, high noble, white high noble, yellow gold, and BiO 24-karat gold. For patients with long PFM track records, matching like with like is often the practical choice.

Can I combine materials in one arch?

Absolutely — a common pattern is e.max in the esthetic zone with zirconia in posterior. Note the material for each unit on the Rx, or call and we'll plan the combination with you before you prep.

Quick answers

Which is stronger, zirconia or e.max?

Monolithic zirconia is the strongest all-ceramic option and the usual pick for molars, bridges and bruxers. e.max is strong enough for anterior crowns and veneers, where its translucency is the deciding advantage.

Which looks more natural, e.max or zirconia?

e.max — its lithium disilicate translucency is closest to natural enamel, which is why it dominates anterior work. High-esthetic zirconia has narrowed the gap for posterior and combined cases.

How long does each take at MARS USA Dental Lab?

All-porcelain (zirconia and e.max) runs 7 in-lab working days; PFM runs 8. Working days exclude shipping, weekends and holidays — call 314.429.5000 for rush cases.

Related: Zirconia crowns · IPS e.max · PFM crowns

Written by the MARS USA Dental Lab team · Last updated: August 2026

Not sure which material fits the case?

Call the lab and describe the prep, the bite and the smile line — we'll recommend the material and plan the case with you.

Send a case today Call 314.429.5000