When a tooth is badly damaged or missing, a crown or bridge can restore how it looks and works. Here's how these restorations work in Korea, how the materials differ, and how we plan them for a natural result.
When a tooth is badly damaged or a tooth is missing, a crown or a bridge can restore how your smile looks and works. Here's a plain-English guide to both, and how they're planned for a natural result.
What is a crown?
A crown is a custom cap that covers a whole tooth, restoring its strength, shape, and appearance. It's often used after a large filling, a root canal, or a crack — when a simple filling isn't enough to protect the tooth.
When a filling isn't enough
The dividing line is how much of your own tooth is left, not how big the hole looks.
A filling sits inside a tooth and relies on the walls around it to hold the chewing force. Once those walls are thin — after repeated fillings, a fracture, or a root canal that removed structure from the middle — a larger filling makes the tooth more likely to split, not less. A crown works the opposite way: it sits over the tooth and holds it together.
In between the two there's a middle option worth asking about: an inlay or onlay, a lab-made piece that replaces part of the biting surface without covering the whole tooth. If a crown is proposed and you still have plenty of healthy tooth, it's fair to ask whether one of these would do.
What is a bridge?
A bridge replaces one or more missing teeth by anchoring to the healthy teeth on either side of the gap. It's one way to fill a gap without surgery — an alternative to an implant in some situations.
What a bridge asks of the teeth beside the gap
This is the trade-off to understand before you agree to one.
To carry a bridge, the teeth on each side of the gap are filed down to take crowns. If those teeth are already heavily filled or crowned, you're restoring them anyway and nothing is lost. If they're healthy and untouched, a bridge means permanently reducing two sound teeth to replace one missing one — and that can't be undone.
The other consideration is what happens underneath. A bridge spans the gap but doesn't replace the root, so the bone under it keeps shrinking. An implant replaces the root and keeps that bone in use. Neither fact makes one option right for everyone; they're the facts that decide which is right for you.
Which one do you need?
| Situation | Often the best fit |
|---|---|
| A damaged or heavily filled tooth | Crown |
| A missing tooth | Implant or bridge |
| A root-treated back tooth | Crown to protect it |
The right choice depends on your teeth and your priorities — we'll walk you through the options.
Materials and a natural look
Modern crowns and bridges are usually all-ceramic or zirconia, matched to the shade and shape of your other teeth so they blend in. Getting that match right is what makes a restoration look like your own tooth rather than "dental work."
Choosing a material
There's no single best material — there's a best material for a particular tooth in a particular mouth.
| Material | Where it tends to suit |
|---|---|
| Zirconia | Back teeth and long-span bridges, where strength matters most |
| Glass ceramic | Front teeth, where light passing through the material is what makes it look natural |
| Metal-ceramic (PFM) | A long-standing option; strong, though the metal edge can show at the gum line over time |
| Gold alloy | Rarely chosen for appearance, but very kind to the opposing tooth and extremely durable |
What should drive the choice: how much force the tooth takes, whether it shows when you smile, how much tooth is left to bond to, and whether you grind. If you have teeth grinding habits, say so — it changes the recommendation.
How they're made
- A 3D scan and preparation of the tooth.
- A custom restoration designed to fit your bite and match your teeth.
- Fitting and adjustment — usually over a couple of visits.
How long it takes
A crown or a small bridge is usually a matter of weeks rather than months, because the work is lab work rather than healing. Typically that means a preparation visit, a temporary restoration while the final one is made, and a fitting visit where the shade and the bite are checked before it's cemented.
What extends it: a root canal that has to be done first, gum treatment before an impression can be taken accurately, or a shade that needs a second try to match a front tooth. Ask how many visits your case needs before you start, so it fits around your work.
Making it last
Crowns and bridges don't decay, but the tooth underneath still can — and that's what usually ends them.
- The margin, where the restoration meets the tooth at the gum line, is where new decay starts. That's the spot to clean carefully.
- Under a bridge, you have to clean beneath the false tooth, not just around it. A floss threader or an interdental brush is what makes that possible, and it takes a minute a day.
- Gum disease loosens the supporting teeth, which takes the bridge with them.
- Grinding cracks ceramic. If you grind, a night guard protects the work you paid for.
- Regular checkups catch a leaking margin while it's still a small repair.
At Seoul Lab Dental: crowns and bridges are planned from a 3D scan by Dr. Hong Jung-eun, a board-certified specialist in prosthodontics — the field concerned with how restorations fit, look, and hold up under a real bite. Your shade and bite are checked before anything is cemented, and the cost is quoted in writing, in English.
Cost and insurance
Crowns to restore damaged teeth are often partly covered by NHIS; purely cosmetic work is private pay. Materials and the number of teeth affect the price, so ask for an itemised written estimate.
For a bridge, remember you're paying for more units than the gap suggests: a single missing tooth between two sound ones is a three-unit bridge, because the two supporting crowns are part of it. That's the most common reason a bridge quote looks higher than expected. Our guide to dental costs in Korea covers how to compare estimates line by line.
Questions worth asking before you agree
- How much of my own tooth is left — does this need a crown, or would an onlay do?
- Which material are you using, and why that one for this tooth?
- For a bridge: are the supporting teeth already restored, or are you filing down healthy teeth?
- How many units is the estimate for, and how many visits?
- What does NHIS cover here, and what doesn't it?
Frequently asked questions
What's the difference between a crown and a veneer?
A crown covers the whole tooth to restore a damaged or weakened one; a veneer is a thin shell on the front of a tooth, mainly for appearance. A scan and exam show which suits your case.
Do I need a crown, or would a filling do?
It depends on how much of your own tooth is left, not how big the cavity looks. A filling relies on the walls around it; once those are thin, a bigger filling makes a split more likely. Ask whether an inlay or onlay would work if you still have plenty of healthy tooth.
How long do crowns and bridges last?
With good care they can last many years. Keeping the tooth and gum healthy — brushing, cleaning between the teeth and under a bridge, and regular checkups — makes the biggest difference. New decay at the margin where the restoration meets the tooth is what usually ends them.
Is a bridge worse for my other teeth than an implant?
It asks more of them. A bridge needs the teeth on each side filed down for crowns, which can't be undone — though if those teeth already need crowns, nothing is lost. A bridge also doesn't replace the root, so the bone under the gap keeps shrinking. Which matters more depends on your teeth.
Are crowns covered by insurance in Korea?
Crowns to restore damaged teeth are often partly covered by NHIS, so you pay a co-payment; purely cosmetic work is private pay. We confirm the cost in writing after your exam.
Why is a bridge for one missing tooth quoted as three units?
Because the two crowns on the supporting teeth are part of the bridge, not extras. A single gap between two sound teeth is a three-unit bridge. Ask how many units your estimate covers — it's the most common reason a quote looks higher than expected.
Want a clear estimate for your treatment?
Book a 3D scan and consultation — you'll leave knowing your treatment plan and exact cost.
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