Zirconia crowns in Tripoli: strength, appearance and the treatment step by step

A zirconia crown is a metal-free, tooth-coloured cap made from a very strong ceramic. It suits back teeth, heavy biters and people who prefer to avoid metal, and modern versions look natural. In most cases the treatment takes two visits about one to two weeks apart: preparation under local anaesthesia, then fitting.

What zirconia is, and why dentists use it for crowns

Zirconia is the everyday name for zirconium dioxide, a white ceramic. Although zirconium itself is a metal, zirconia is an oxide: a ceramic with no metallic parts and none of the grey colour of metal. For dental use it is stabilised with small amounts of other oxides.

Its main advantage is toughness. Zirconia resists cracking far better than most other dental ceramics, which is why it is widely used for molars, for bridges and for crowns on implants. The Cleveland Clinic overview of dental crowns describes zirconia crowns as extremely durable, able to withstand heavier forces than other ceramic crowns and gentle on the opposing teeth.

Zirconia is also well tolerated by the gums, and true allergic reactions to it are considered very rare. To see how it compares with the other materials, including E.max, porcelain-fused-to-metal and full metal, read our guide to dental crowns, their types and when you need one.

Not all zirconia is the same: monolithic, layered and multilayer

A “zirconia crown” can be made in different ways. The type affects how natural the crown looks, how well it resists chipping and how much of the tooth has to be reshaped.

Monolithic zirconia

The whole crown is milled from one solid block, with no separate porcelain layer on top. It is the strongest option and can often be made thinner, which helps preserve healthy tooth structure. Its colour comes from stains and a glaze, so it can look slightly more opaque than a natural tooth. It is a common choice for molars and for people who grind their teeth.

Layered zirconia

A zirconia core is covered with porcelain applied by hand, a little like a traditional metal-ceramic crown but without the metal. This gives very lifelike colour and depth. The outer porcelain is the weak point, however: like any veneering porcelain, it can chip under heavy forces.

Multilayer and translucent zirconia

Newer zirconia blocks contain a gradient of shades, slightly darker near the gum and lighter and more translucent towards the biting edge, imitating a natural tooth. Translucent zirconia looks noticeably more natural than older types, but the more translucent it is, the less strong it tends to be, so the material is chosen according to the position of the tooth.

For the most visible front teeth, many dentists still prefer a glass-ceramic. Our comparison of zirconia and E.max crowns for front and back teeth explains when each one makes sense.

Who is a zirconia crown for, and when is something else better?

A zirconia crown is often recommended in these situations:

• A molar or premolar with a large filling, a crack or heavy wear.
• A back tooth after root canal treatment, which usually needs full coverage to protect it from cracking, as explained in why a crown is often recommended after root canal treatment.
• People who clench or grind their teeth (bruxism), for whom monolithic zirconia is often chosen.
• A very dark tooth or a tooth with a metal post, which the opacity of zirconia helps to hide.
• Replacing an old metal-ceramic crown that shows a grey line at the gum; see zirconia versus porcelain-fused-to-metal crowns.

Zirconia is not automatically the right answer. When enough healthy tooth remains, a filling or a partial restoration keeps more of your natural tooth; our article on inlays and onlays explains this middle ground. A front tooth that needs maximum translucency may be better served by E.max.

There is also a practical point. Zirconia is very hard, so drilling through it later, for example if the nerve ever needs root canal treatment, is more demanding than with some other materials. For this reason the health of the nerve is checked carefully before a tooth is crowned.

Zirconia crowns in Tripoli: the treatment step by step

In most cases a zirconia crown needs two treatment visits, roughly one to two weeks apart, sometimes preceded by a separate examination.

Before treatment: examination and planning

The dentist examines the tooth, the gum and your bite, and usually takes an X-ray to check the root and the nerve. Decay, an inflamed nerve or gum inflammation is treated first, because a crown should only be placed on a healthy foundation. You then discuss the type of zirconia, the shade and the plan of visits.

First visit: preparing the tooth (about one hour)

1. Local anaesthesia numbs the tooth and the gum around it.
2. Old filling material and any decay are removed. If much of the tooth is missing, it is rebuilt with a core, a solid foundation of filling material.
3. A thin, even layer is removed from the outside of the tooth to make room for the crown. Monolithic zirconia often needs less reduction than a metal-ceramic crown.
4. The shade is chosen and compared with your neighbouring teeth.
5. A precise impression of the prepared tooth and the opposing teeth is taken for the laboratory.
6. A temporary crown is fitted so that you can eat, speak and smile normally while you wait.

In the laboratory (usually one to two weeks)

Zirconia crowns are generally designed on a computer and milled from a zirconia block. The milled crown is then sintered, meaning it is heated in a special furnace until it reaches its final hardness, shrinking to its exact size in the process. Finally it is coloured and glazed or polished; for a layered crown, porcelain is added by hand.

Second visit: fitting (often 30 to 60 minutes)

The temporary crown is removed and the zirconia crown is tried in. The dentist checks the fit at the gum line, the contacts with the neighbouring teeth, the colour and your bite, and makes small adjustments where needed. The crown is then fixed with a dental cement or an adhesive resin chosen for that tooth. Any adjusted surface is polished smooth again, which helps protect the opposing teeth.

Pain, anaesthesia and the first few days

The tooth is prepared under local anaesthesia, an injection that numbs the area, so most people feel pressure, vibration and water spray rather than pain. If you feel anxious, say so at the start: each step can be explained, and you can raise a hand to pause at any time. The fitting visit usually needs little or no anaesthesia.

Once the numbness wears off, a few things are normal and usually settle within a few days:

• A tender gum around the tooth.
• Mild sensitivity to cold.
• A new feeling under the tongue, which the mouth gets used to quickly.

Contact the clinic if the crown feels high when you bite together, if the pain grows instead of fading, if the tooth throbs or wakes you at night, or if the gum swells. A high spot is quick to adjust, and leaving it can make the tooth sore.

Living with a zirconia crown: care, lifespan and repairs

A zirconia crown cannot decay, but the natural tooth underneath can, especially at the edge where crown and tooth meet. Brush twice a day with fluoride toothpaste, clean between the teeth with floss or interdental brushes, and keep regular check-ups and scaling.

• Whitening does not change the colour of zirconia. If you are thinking of whitening, do it before the shade of the crown is chosen; our article on laser teeth whitening explains how it works.
• If you grind at night, a custom night guard protects both the crown and your other teeth.
• Avoid biting ice, nutshells or bottle caps.

With good care, zirconia crowns commonly last many years, and many last well beyond ten. How long yours lasts depends as much on oral hygiene, your bite and the health of the tooth underneath as on the material itself. If the porcelain of a layered crown chips, a small chip can sometimes be polished or repaired; a larger fracture usually means a new crown. A zirconia crown generally cannot be taken off in one piece, so replacing it involves cutting it away carefully.

Risks, alternatives and what determines the cost

Zirconia crowns are a well-established, predictable treatment, but they have limits worth knowing:

• Sensitivity or, occasionally, nerve inflammation after preparation, mainly in teeth that were already deeply damaged.
• Chipping of the porcelain layer in layered zirconia.
• Decay or gum inflammation at the crown edge if cleaning is neglected.
• Wear of the opposing tooth if the zirconia surface is left rough rather than polished.
• Irreversibility: once a tooth has been prepared for a crown, it will always need a crown or a similar restoration.

Alternatives depend on the tooth: a filling or composite bonding for small damage, an onlay when strong walls remain, an E.max crown for a highly visible front tooth, or a porcelain-fused-to-metal crown, which remains a sensible choice in some situations.

There is no single price for a zirconia crown. The cost depends on the type of zirconia (monolithic, layered or multilayer), the number of teeth, whether a core build-up, root canal treatment or gum care is needed first, whether the crown sits on a natural tooth or an implant, and the laboratory work involved. After an examination, you receive a clear plan that explains each of these points.

Zirconia crowns at Ajam Dental Clinic in Tripoli

Ajam Dental Clinic offers zirconia crowns alongside E.max ceramic crowns and porcelain-fused-to-metal crowns, so the material can be matched to each tooth rather than the other way round. Crowns are part of the prosthodontic and aesthetic work of Dr. Abdel Rahman Ajam, who holds a DDS and an MSc in Aesthetic and Prosthetic Dentistry. When a tooth needs root canal treatment before its crown, this is carried out at the clinic by a visiting specialist endodontist.

Patients come to our clinic on Fouad Chehab Boulevard, Al-Makateb Building, 1st Floor, from across Tripoli — El Mina, Abu Samra, Al-Tall, Zahriyeh and Bahsas — as well as from Qalamoun and the rest of North Lebanon. You can read more about our crowns, bridges and other prosthodontic treatments. To have a tooth assessed and find out whether zirconia suits it, contact the clinic by WhatsApp or phone to book a consultation.

Your appointment at Ajam Dental Clinic

At the clinic, crowns are handled by Dr. Abdel Rahman Ajam, whose field is aesthetic and prosthetic dentistry.

Consultations are by appointment, Monday to Saturday from 08:00 to 17:00, at Al-Makateb Building, 1st floor, Fouad Chehab Boulevard, Tripoli. At the first visit the dentist examines you, takes the X-rays that are needed and explains the options, the number of visits and the fees before any treatment starts.

WhatsApp Dr. Abdel Rahman

All our guides on crowns, bridges and dentures

• Dental crowns: types, differences and when you need one
• Zirconia or porcelain-fused-to-metal crowns: what is the difference?
• Zirconia or E.max ceramic crowns: front teeth versus back teeth
• Dental bridges: when are they the right option?
• Dentures: getting used to them in the first month
• How long do crowns and bridges last?
• Full-mouth rehabilitation: restoring many teeth at once
• PFM crowns (porcelain-fused-to-metal): when they are still a sensible choice
• Inlays and onlays: the middle ground between a filling and a crown
• Full mouth rehabilitation step by step: from first consultation to final result
• Partial dentures: acrylic, metal-framework and flexible options compared
• Complete dentures: how they are made, fitted and cared for

This article provides general information for patients. It does not replace an examination by a dentist, who can advise you on your own situation.