Dental Bridges: How They Work, and When an Implant Is the Better Choice

What a bridge is, the four types and what each costs you in healthy tooth structure, the bone loss under the gap nobody mentions, and the cases where a bridge genuinely beats an implant.

Written and kept up to date by the CureBooking medical travel team · Last updated October 2026

The short answer

A bridge replaces a missing tooth by anchoring a false tooth to the teeth on either side. Those neighbouring teeth are crowned to carry it, which means healthy tooth structure is removed from two sound teeth to replace one missing one.

An implant replaces the root instead, so the neighbours are untouched and the bone under the gap keeps its stimulus. That is the main reason implants have become the default where the anatomy and the budget allow.

A bridge is still the right answer in specific cases: when the neighbouring teeth already need crowns anyway, when there is not enough bone and the patient does not want grafting, when a medical condition rules out surgery, or when the gap needs filling now rather than in three to six months.

The four kinds, and what each costs in tooth structure

Type	How it works	The trade-off
Conventional (3-unit)	Crowns on both neighbours carry a false tooth between them	Two healthy teeth are reshaped; the standard option for decades
Cantilever	Anchored on one side only	Only one tooth prepared, but the leverage loads it heavily — limited indications
Resin-bonded (Maryland)	Wings bonded to the back of the neighbours, almost no drilling	Conserves tooth structure; debonds more often, best for front teeth and light bites
Implant-supported	Two implants carry a bridge over a longer gap	No damage to natural teeth; needs bone and two visits

What happens under the gap

Jaw bone keeps its volume because it is loaded through a tooth root. Remove the root and the bone in that spot slowly resorbs — fastest in the first year, then steadily. A conventional bridge spans the gap but does nothing to the bone underneath it.

Ten years later that shows up in two ways: a visible hollow under the false tooth where the gum has receded with the bone, and less bone available if you later decide you want an implant after all. This is why the sequence matters — a bridge now can make an implant harder later, while an implant now preserves the option of everything else.

The cost arithmetic, with our actual prices

A three-unit zirconia bridge is three crowns: at €160 per zirconia unit that is around €480. A single implant with a zirconia crown is €500 for the implant plus €160 for the crown, so about €660 — plus CBCT planning at €250 where it is not already in the plan, and a bone graft at €250 or a sinus lift at €300 if the site needs it.

So on the day, the bridge is cheaper. Over twenty years the arithmetic usually reverses: a bridge is replaced when either abutment tooth fails, and when it does, you are replacing three units and possibly dealing with a tooth that cannot be saved. An implant that integrates and is cleaned properly can outlast two bridges.

This is a decision to make with the X-ray in front of you, not from a price list. What we will not do is quote you a bridge because it is quicker to finish in one trip when your case clearly calls for an implant.

When a bridge is genuinely the better plan

The teeth either side already need crowns — large old fillings, cracks, failed restorations. Then the bridge costs you nothing extra in healthy structure.
Not enough bone, and grafting is unwanted or medically unwise.
A medical reason that makes implant surgery a poor idea: uncontrolled diabetes, certain bone medications, heavy smoking the patient will not pause.
Time: a bridge is finished in one visit of a few days, an implant needs two visits three to six months apart. For someone who cannot travel twice, that is a real constraint rather than a preference.
A front tooth lost to trauma in a young patient, as an interim solution while growth completes.

Living with a bridge

The one thing that decides how long a bridge lasts is cleaning under it. A bridge is a single unit — you cannot floss between the false tooth and the crowns, so you clean underneath it with a floss threader, superfloss or an interdental brush, daily. Plaque left under a bridge causes decay at the crown margins of the anchor teeth, and that is how most bridges end.

Expect 10 to 15 years from a well-made bridge, often more. Avoid biting hard things with the false tooth, treat grinding with a night guard, and keep the six-month hygiene appointment — the X-ray at that visit is what catches decay at an abutment while it is still repairable.

If you are travelling for treatment

A bridge fits a single trip comfortably: preparation and a temporary at the start, the finished bridge a few days later, which is why an in-house laboratory matters so much here. Our partner clinics make crowns and bridges in the building, so a shade or contact-point adjustment happens the same day instead of becoming a reason to accept a poor fit.

Ask for the bridge material in writing (zirconia or metal-ceramic), ask to see the contacts checked with floss before cementing, and ask what the warranty covers — ours is 5 years written on zirconia. And ask the question that decides the next twenty years: is a bridge what my X-ray calls for, or is it what fits my flight?

Questions people ask

Does a bridge damage the teeth next to the gap?

It removes enamel and dentine from them, permanently — that is how they carry the bridge. If those teeth are sound and young, that is a real cost. If they already need crowns, it is not a cost at all.

How many teeth can a bridge span?

Conventionally one or two missing teeth between sound anchors. Longer spans flex and overload the anchor teeth; past that point the answer is an implant-supported bridge, which is also how a full arch is restored with four to six implants.

Is a bridge faster than an implant?

Yes, and that is its strongest practical argument: days instead of months, one trip instead of two. The slowness of an implant is biology — bone needs three to six months to fuse to titanium, and nothing shortens that reliably.

Can a bridge be replaced with implants later?

Usually yes, but the bone under the old gap will have thinned, so grafting is more likely and the result is more work than placing an implant at the start. This is worth knowing while you are choosing, not afterwards.

Which looks better?

Both can look excellent. A bridge has the advantage of a continuous ceramic design; an implant has the advantage of preserving the gum architecture because the bone is still loaded. In the front of the mouth the deciding factor is usually gum thickness, which a dentist assesses in person.