Not every damaged tooth needs to be replaced — and not every gap requires an implant. Dental crowns and bridges have been workhorses of restorative dentistry for decades, and with today's ceramic materials and digital fabrication, they look and function better than ever.
This guide explains what each restoration involves, when each is appropriate, and what you can realistically expect from the process.
What Is a Dental Crown?
A crown is a cap that fits over an existing tooth, covering it entirely from the gumline up. It restores the tooth to its original shape, size, and function — and in most cases, its appearance too.
Think of it as a protective shell. Once cemented in place, the crown takes on all the chewing forces and protects whatever remains of the natural tooth structure underneath.
When Is a Crown Needed?
- After root canal therapy — the treated tooth loses its internal blood supply and can become brittle. A crown protects it from fracture under biting force.
- Severely decayed teeth — when decay is too extensive for a filling to hold, a crown replaces the lost structure entirely.
- Cracked or fractured teeth — a crown holds the tooth together and prevents the crack from spreading, especially on molars where forces are highest.
- Broken teeth — when a cusp or significant portion of the tooth has broken away.
- Worn teeth — from grinding (bruxism) or acid erosion, crowns can rebuild the vertical dimension of severely worn teeth.
- Cosmetic reasons — occasionally crowns are used to change the shape or colour of a tooth when veneers are not suitable.
What Is a Dental Bridge?
A bridge replaces one or more missing teeth by anchoring to the teeth on either side of the gap — the "abutment" teeth. These supporting teeth are prepared (reduced in size) to receive crowns, and a false tooth (pontic) is suspended between them. The result is a fixed, non-removable restoration that spans the space.
Unlike a denture, a bridge is cemented permanently and is cared for exactly like natural teeth (with the addition of flossing underneath the pontic using a floss threader or water flosser).
When Is a Bridge Appropriate?
A bridge works well when:
- The teeth on either side of the gap are healthy and strong enough to serve as abutments
- The missing tooth or teeth are in a row (not scattered gaps)
- A dental implant is not possible or preferred
- Cost or treatment timeline is a significant consideration
The main drawback of a bridge is that two otherwise healthy teeth must be permanently reduced to anchor it. For this reason, implants — where the missing tooth is replaced independently, without affecting neighbours — are often preferred when anatomy allows.
Materials: What Are Crowns Made Of?
The material used depends on the location of the tooth, the forces it must bear, and aesthetic requirements.
All-Ceramic / Zirconia
The gold standard for visible teeth. Zirconia crowns are strong, tooth-coloured, and require no metal substructure. They transmit light similarly to natural enamel, making them virtually indistinguishable from the surrounding teeth.
At The Dental Atelier, we use high-quality ceramic and zirconia restorations for most anterior and posterior cases.
Porcelain-Fused-to-Metal (PFM)
An older standard: a metal inner core with porcelain layered on top. Strong and durable, but the metal margin can show as a dark line at the gumline over time, and the opaque core affects light transmission. Less commonly used now that zirconia offers comparable strength with better aesthetics.
Full Metal (Gold Alloy)
Rare in modern practice for cosmetic reasons, but gold remains excellent for second molars where chewing forces are highest and aesthetics are not a priority. Extremely durable, requires the least tooth reduction, and rarely fractures.
The Crown Procedure
Placing a crown typically requires two appointments.
Appointment 1: Preparation and Impressioning
The tooth is numbed and reduced in size — usually 1–2 mm on all sides — to create space for the crown. A digital scan or physical impression is taken of the prepared tooth and sent to the dental laboratory.
A temporary crown is fitted to protect the tooth between appointments. You can eat and speak normally with a temporary, but avoid very sticky or hard foods.
Appointment 2: Fit and Cementation
When the permanent crown returns from the lab (usually within two weeks), it is checked for fit, bite, and colour before being permanently cemented. Minor adjustments to the bite are common and take only minutes.
Some clinics with in-house milling (CAD/CAM) can complete the process in a single visit. For complex cases or where colour-matching is critical, the traditional two-visit process typically produces better results.
What to Expect After Treatment
- Sensitivity: Some temperature sensitivity for the first few weeks is normal as the tooth settles. It should reduce progressively.
- Gum tenderness: The gum around the crown margin may be tender for a few days. Gentle brushing and warm salt water rinses help.
- Bite adjustment: If your bite feels "off" after the anaesthetic wears off, contact us — a small adjustment is quick and ensures the crown lasts as long as possible.
Can a Crown or Bridge Be Whitened?
This comes up often from patients considering whitening after they already have a crown or bridge on a front tooth.
The honest answer is no — ceramic and zirconia restorations do not respond to whitening gel the way natural enamel does. If you whiten your natural teeth after a crown was placed, the crown will stay exactly the shade it was made in, and it can end up looking noticeably lighter than your restoration once the surrounding teeth lift. This is why the order of treatment matters: if whitening is something you want, it's worth doing it before a new crown or bridge is fabricated, so the final shade can be matched to your brighter, post-whitening colour rather than the other way around.
If you already have a crown and are unhappy with a shade mismatch after whitening naturally, the crown itself would need to be remade to match — whitening cannot correct it.
How Long Do Crowns and Bridges Last?
With good oral hygiene, crowns typically last 10–15 years, and many last considerably longer. Zirconia crowns are among the most durable restorations in dentistry.
Bridges have similar longevity for the restoration itself, but the underlying abutment teeth remain vulnerable to new decay — particularly at the margins where the crown meets the tooth. This makes meticulous cleaning around the bridge margins essential.
Factors that shorten crown life: clenching or grinding (a night guard helps significantly), poor oral hygiene, and leaving problems untreated when they arise.
Crown vs Veneer: What's the Difference?
These two get confused often, and the distinction matters for choosing the right treatment.
A veneer covers only the visible front surface of a tooth and is used mainly for cosmetic changes — colour, shape, minor alignment — on teeth that are otherwise structurally sound. A crown covers the entire tooth from the gumline up and is a structural, protective restoration used when a tooth has lost significant strength, whether from decay, a crack, or root canal treatment.
In short: if the tooth's main problem is how it looks, a veneer is usually the more conservative option. If the tooth's main problem is strength or missing structure, a crown is the appropriate fix — a veneer alone would not hold up under normal biting forces on a compromised tooth.
Signs Your Crown or Bridge Needs Attention
Most crowns and bridges give some warning before they fail outright. Worth checking for:
- A change in fit — if a crown suddenly feels slightly high, loose, or different when you bite down, it may have shifted or the cement seal may be breaking down.
- Sensitivity that's new, particularly to hot or cold at the gumline of a crowned tooth, which can indicate decay forming at the margin where the crown meets the natural tooth.
- Visible dark line at the gum edge — more common with older porcelain-fused-to-metal crowns as gums recede slightly with age, exposing the metal margin underneath.
- Difficulty flossing under a bridge where it was previously easy, which can mean the pontic or gum tissue has shifted slightly.
- A cracked or chipped crown — small chips in porcelain can sometimes be smoothed or repaired, but a cracked crown should be assessed promptly rather than left, since the underlying tooth is only as protected as the crown covering it.
None of these mean the whole restoration has failed, but each is worth a check-up rather than a wait-and-see approach — margins and cement seals are far easier to fix early than after decay has developed underneath.
Caring for a Crown or Bridge
- Brush twice daily — same as natural teeth, including at the gumline where the crown margin meets the tooth.
- Floss daily — for bridges, use a floss threader, superfloss, or water flosser to clean under the pontic.
- Wear a night guard if you grind — nothing shortens crown life faster than uncontrolled bruxism.
- Attend regular check-ups — your dentist will check crown margins for decay and the gum health around the restoration.
A well-made crown or bridge is invisible in the mouth and requires no special maintenance beyond good daily hygiene. If you have a tooth that's been damaged, heavily filled, or lost, we'd be glad to walk you through your options.
Contact us at The Dental Atelier to book a consultation with Dr. Aatika — she'll assess your specific situation and give you an honest recommendation on the best path forward.