"Porcelain crown" gets used for almost any tooth-coloured crown, but it actually covers several quite different ceramics, and there are metal and part-metal options as well. The material changes how natural the crown looks, how it copes with chewing and grinding, and how much of your tooth needs to be shaped. For most people the deciding factor is simple: which tooth it is, and how hard you bite on it.
The main materials in plain terms
Glass-ceramics such as lithium disilicate
These are the materials most people mean today when they say a porcelain crown. They let light through in a way that resembles enamel, so they blend well at the front of the mouth, and they can be bonded to the tooth. A crown milled as a single solid block, called monolithic, is considerably tougher than older layered porcelain and is also used on premolars and some molars.
Zirconia
Zirconia is a very hard, metal-free ceramic. Solid monolithic zirconia is often chosen for back teeth and for people who clench or grind, because it resists chipping well. Newer, more translucent zirconias look more natural and can work further forward, though they give up a little strength in exchange. Zirconia can also be layered with porcelain on the outside to improve its appearance, which adds a layer that can chip.
Porcelain fused to metal
For decades this was the standard crown: a metal shell with porcelain baked over it. It is strong and has a long track record. Its main drawback is cosmetic. The metal blocks light, so the crown can look a little flat, and if the gum recedes a dark margin can show at the gum line. For visible teeth, all-ceramic crowns have largely taken its place.
Gold and other metal alloys
A full metal crown needs the least tooth reduction of any option, rarely fractures and is generally considered gentle on the teeth it bites against. Gold crowns can last a very long time. The obvious downside is the colour, so they are usually reserved for back molars that do not show when you smile.
Front teeth: appearance usually leads
A front tooth is on show every time you talk or smile, and the forces on it are lighter than on a molar. That is why glass-ceramic or a translucent or layered zirconia is the common choice. The shade, surface texture and translucency all need to match the teeth beside it, which takes careful photographs and communication with the lab. If only the front surface of a tooth needs improving, a veneer may be an alternative; our crowns versus veneers comparison explains the difference.
Back teeth: strength usually leads
Molars do most of the heavy chewing, and that is where crowns are most likely to chip or crack. Monolithic zirconia, monolithic glass-ceramic or a metal crown are common choices here. If you grind your teeth at night, the dentist may suggest a tougher material and a night splint to protect the crown and your other teeth. Our guide to sensitivity and tooth wear touches on the signs of grinding.
What recent research says about survival
A 2026 systematic review in the International Journal of Prosthodontics (Pjetursson and colleagues) pooled 64 studies covering more than 11,000 crowns on natural teeth. Over five years, monolithic lithium disilicate crowns had the highest survival at 98.5%, with layered zirconia at 97.3%, metal-ceramic at 97.1% and monolithic zirconia at 96.8%. Older feldspathic porcelain did noticeably less well at 90.4%. The authors found that solid, monolithic designs chipped and fractured less often than crowns with a layer of porcelain on top.
In other words, several modern materials perform similarly well over five years, and the design of the crown matters as much as the material name. How long a crown lasts beyond that also depends on the health of the tooth underneath, your bite, and how well the edges are kept clean.
Comparing the options
| Material | Look | Chipping risk | Tooth shaping | Common use |
|---|---|---|---|---|
| Glass-ceramic (lithium disilicate) | Very natural | Low when monolithic | Moderate | Front teeth and premolars |
| Monolithic zirconia | Good, more opaque | Low | Moderate | Molars, people who grind |
| Layered zirconia | Very natural | Higher, in the outer porcelain | Moderate to more | Visible teeth |
| Porcelain fused to metal | Good, can show a dark margin | Moderate, in the porcelain | More | Situations needing a metal base |
| Gold or metal alloy | Metallic | Very low | Least | Back molars out of sight |
Other things that shape the choice
How much tooth is left matters. A tooth with only a small area of damage may be better served by an onlay or a filling than a full crown, and our guide to inlays, onlays, crowns and fillings explains how dentists decide. A tooth that has had root canal treatment often needs a crown or onlay to protect it from splitting. Budget is also part of the conversation, and our ceramic versus zirconia crowns article goes deeper into those two options.
Cost and health fund cover
A single crown typically costs between $1,500 and $2,500 across the Australian market, depending on the material, lab work and complexity. That is a typical market range rather than a Lumi fee. Our dental crown cost guide explains what drives the price, and does health insurance cover dental covers rebates under major dental extras.
Common questions
How many visits does a crown take?
Often two: one to prepare the tooth and scan it, with a temporary crown fitted, and a second to fit the final crown once the lab has made it. Timing depends on the lab and the case.
Will a crown be noticeable?
A well-matched ceramic crown is designed to blend in with the teeth around it. Metal crowns are visible, which is why they are kept for teeth at the back.
Can a crown be whitened?
No. Crown materials do not change colour with whitening gels, so if you would like whiter teeth, whitening is usually done before a front crown is matched.
If you have been told you need a crown, we can look at the tooth and explain which materials suit it and why. You will usually receive a written treatment plan, often by email, before anything starts. Book a consultation with our team in Melrose Park, or see current offers.
