Crown, Bridge or Implant for One Missing Tooth

When a single tooth is missing, or about to be, the options get presented quickly and often in unfamiliar language. Crown, bridge, implant: three words that sound like variations on a theme but describe quite different things.

This article sorts out what each actually is and the practical considerations that push a decision one way or another. It is general information only and is not a substitute for an assessment of your situation, because the right answer genuinely depends on the specific gap and the teeth around it.

First, a clarification: a crown is not a replacement

A crown covers a tooth that is still there. It is a restoration for a damaged, cracked or root-canal-treated tooth. It does not fill a gap where a tooth is missing.

The confusion arises because crowns appear inside the other two options. A bridge is made of crowns joined together. An implant is finished with a crown on top. So “crown” describes a component as much as a treatment. Our article on when a tooth needs a crown instead of a filling covers crowns in their own right.

For an actual gap, the realistic options are a bridge, an implant, a removable partial denture, or leaving it.

What a bridge is

A bridge spans the gap by anchoring to the teeth either side. Those neighbouring teeth are prepared (reshaped, much as they would be for crowns) and the bridge, made as one piece with a false tooth suspended between the anchors, is cemented onto them.

What tends to favour it:

• It is fixed in place; nothing comes out.
• The timeline is relatively short: typically a few weeks rather than months.
• It does not depend on the amount of bone at the gap site.
• It can be a sensible choice when the neighbouring teeth already need crowns for their own reasons, since work that would be done anyway does double duty.

What tends to count against it:

• It requires cutting down two healthy teeth if they are otherwise sound. That is the significant objection, and it should be weighed seriously.
• Cleaning underneath the false tooth requires a specific technique: threading floss or using a special brush beneath the span.
• If one anchor tooth develops a problem later, the whole bridge is implicated.

What an implant is

An implant replaces the root. A titanium post is placed into the bone at the gap site, left to integrate with the bone over a period of months, and then restored with a crown on top.

What tends to favour it:

• The neighbouring teeth are left untouched.
• It is cleaned like a normal tooth: brush and floss around it.
• It stimulates the bone in a way a bridge over a gap does not.
• A problem with it is generally contained to that site.

What tends to count against it:

• The timeline is considerably longer, usually several months from placement to final crown.
• It involves a surgical procedure.
• It depends on there being adequate bone, and on general health factors: healing capacity, smoking, and some medical conditions all feed in.
• It typically involves a higher upfront cost.

Our dental implants page explains the process, and our articles on the steps in the dental implant process and what affects the cost of dental implants in Canberra go further into each.

Note that we do not offer All-on-4. Our implant work covers single teeth, implant-supported bridges for smaller spans, and implants used to anchor an implant-retained denture.

The other two options

A removable partial denture is generally the least expensive route and requires no alteration of the neighbouring teeth, but it comes in and out, and most people find it less comfortable than a fixed option. It can be a sensible interim measure, for instance while an implant site heals. Our dentures page covers this.

Leaving the gap is occasionally reasonable and should not be dismissed automatically. For a wisdom tooth it is usually fine. Further forward it is a more consequential choice, because teeth tend to respond to a space over time (drifting, tilting, or over-erupting from the opposing arch), which can complicate matters later. It is a decision worth making deliberately rather than by default.

The factors that usually decide it

In practice, the choice tends to turn on a handful of things:

• The state of the neighbouring teeth. Heavily filled or already crowned? A bridge uses work that is arguably needed anyway. Pristine and untouched? Cutting them down is a real cost.
• Bone at the gap site. Enough, or would grafting be required first?
• Time. An implant is a months-long process. Sometimes that matters: a wedding, a posting, a move.
• General health and habits. These affect implant healing more than they affect a bridge.
• How the gap will be cleaned. Be honest about this with yourself; a bridge requires a bit more discipline.
• Budget over time, not just today. Compare full pathways rather than headline figures.

The Canberra angle

Timeline is worth thinking about carefully in this city. Canberra has a notably mobile population, and several of the South Canberra suburbs rent heavily: Kingston at around 51 per cent and Barton around 48 per cent on the 2021 Census.

If you may not be in Canberra in eight months, a treatment that spans eight months needs planning. That does not rule out an implant, but it does mean discussing how the stages would be handled and what happens if you move partway through. It is a much better conversation to have at the start than at the halfway point.

Equally, the older and more settled suburbs to the south (Deakin, Yarralumla, Red Hill and Forrest, with median ages between 42 and 50) tend to bring a different set of considerations, often involving several teeth and a longer-term plan rather than a single gap.

What to ask

• What is the condition of the teeth either side of this gap?
• Is there enough bone for an implant, or would grafting be needed?
• What is the realistic timeline for each option?
• What is involved in cleaning each, day to day?
• What happens if I do nothing for now, and is there a point at which the options narrow?

That last question is a good one, because the honest answer is sometimes “nothing much for a while”, and sometimes “the teeth will move and reduce your choices”.

Replacing a missing tooth at Dental Embassy

Dental Embassy is on Northbourne Avenue in Braddon, close to Civic and the inner north. If you have a gap, or a tooth that is not going to last, the useful starting point is an assessment of the site and the teeth around it so the options can be set out against your actual situation.

You can read more on our crowns and bridges page, call us on 1300 000 230, or get in touch to arrange a consultation.