Two ways to fill one gap
When a single tooth is missing, two fixed options come up most often: a dental implant or a bridge. They solve the same problem in very different ways, and neither is automatically right for everyone. Knowing how each one works, and what it asks of your mouth, makes the choice far less daunting.
A dental implant is a small titanium post placed into the jawbone where the root of the tooth used to sit. Once it has bonded with the bone, a crown is fitted on top. It stands on its own and does not lean on any neighbouring tooth. If you would like the full step-by-step, our page on a single tooth implant in Sunbury walks through the process.
A bridge takes a different route. A false tooth, called a pontic, fills the gap and is held in place by crowns cemented onto the healthy teeth on either side. Those teeth are reshaped to take the crowns, and together they carry the bridge across the space.
What it means for your other teeth
The biggest practical difference is what happens to the teeth around the gap. A bridge relies on filing down the two adjacent teeth, even when they are perfectly healthy, and once reshaped they cannot be returned to their original form. An implant leaves those teeth completely untouched, which is why many people weighing up a dental implant versus a bridge start here.
There is also the jawbone to consider. Bone around a missing tooth tends to shrink when it is no longer being used, which is one reason dentists rarely suggest leaving the gap alone. An implant passes chewing forces into the bone in a way that resembles a natural root, helping to keep it active. A bridge sits above the gum, so the bone beneath the gap can still gradually reduce over the years.
“It mattered to me that my healthy teeth were left alone.”
Time, healing and what to expect
A bridge is usually the quicker of the two. It often takes a couple of visits over a few weeks, with no surgery involved. An implant asks for more patience. The post is placed first, then given a few months to fuse with the bone before the crown is added, so the full timeline can run several months.
Placing an implant is a minor surgical procedure, carried out under local anaesthetic. As with any surgery it carries risks, including infection, bleeding, swelling and, less commonly, nerve or sinus involvement, and there is a chance the post does not fuse with the bone. Our dentists explain these risks openly, and how they are minimised, before anything is decided.
Not without a tooth in the meantime. A temporary tooth can usually be worn while an implant heals, so the gap is not left visible during the wait. It is worth asking what temporary options are available for your situation.
How long each one tends to last
Longevity often tips the decision. Published long-term studies report dental implant survival of around 95 per cent over ten years, and many last a good deal longer with proper care. Bridges also perform well, though published data suggests they more often need replacing after roughly ten to fifteen years, partly because the supporting teeth and cement are under constant load.
No result is guaranteed with either option. How long any restoration lasts depends on your gum health, your bite, how well it is cleaned each day and habits such as smoking. Both need looking after, and a bridge in particular needs careful cleaning underneath the false tooth.
The two options, side by side
Here is the comparison at a glance. None of it decides the matter on its own; it is meant to make the trade-offs easy to see before you talk them through at an assessment.
| What matters | Dental implant | Bridge |
|---|---|---|
| Neighbouring teeth | Left untouched | Two are reshaped for crowns |
| The jawbone | Kept active by the post | Can still shrink under the gap |
| Surgery | Minor surgery, local anaesthetic | None |
| Timeline | Several months, with healing | A few weeks |
| Typical lifespan | ~95% at ten years, often longer | Around ten to fifteen years |
| Upfront cost | Higher to begin with | Lower to begin with |
| Daily cleaning | Brush and floss like a tooth | Careful cleaning under the pontic |
The honest pros and cons
Dental implant
The upside
- Leaves the healthy teeth either side untouched
- Helps keep the jawbone active where the tooth was
- High ten-year survival, and often lasts longer
- Cleaned like a natural tooth
The trade-offs
- Involves minor surgery and a healing period
- Takes several months from start to crown
- Higher upfront cost
- Needs enough healthy bone, or grafting first
Bridge
The upside
- No surgery involved
- Finished in a few weeks, not months
- Lower upfront cost
- Sensible when the teeth either side already need crowns
The trade-offs
- Two healthy teeth are permanently reshaped
- Bone under the gap can still shrink over time
- More often needs replacing after ten to fifteen years
- Needs careful cleaning beneath the false tooth
Which might suit you
There is no single right answer, and an honest comparison means saying so. The better fit depends on your bone, your gums, your general health and what matters most to you.
- You would rather not have healthy neighbouring teeth reshaped
- There is enough healthy bone to hold the post, or it can be built up first
- Your gums are healthy and your general health is stable
- You are comfortable with a longer timeline in return for a longer-lasting result
A bridge, on the other hand, may be worth considering when the teeth either side already need crowns or large fillings, when you would prefer to avoid surgery, when you want the gap closed in weeks rather than months, or when significant bone loss makes an implant less straightforward.
Some factors count against an implant, such as heavy smoking, uncontrolled diabetes or significant bone loss, though many of these can be managed or worked around. The only reliable way to know which option fits your mouth is an individual assessment, including a scan of the bone and the teeth beside the gap. Our AHPRA registered dentists set out the trade-offs for your situation, with a free assessment and 3D imaging to base the decision on (last reviewed July 2026), and then let you choose.
Worried about cost? An implant usually costs more upfront than a bridge, though a bridge may need replacing sooner. Every range we quote is published and dated, so there are no surprises. Compare the price guide →
Common questions
Is a bridge cheaper than an implant?
A bridge usually costs less upfront, while an implant is a larger initial outlay. Because a bridge may need replacing sooner, the longer-term difference can be smaller than it first appears. Costs vary with each person, so a quote at your assessment is the reliable figure.
Does an implant hurt more than a bridge?
An implant involves minor surgery under local anaesthetic, so there is some healing afterwards, usually managed with ordinary pain relief. A bridge involves no surgery. Everyone is different, and your dentist will explain what to expect for your own case.
Can I still have an implant if the tooth has been gone for years?
Often yes, although the bone may have shrunk in the meantime. A scan shows whether there is enough bone, or whether it needs building up first. This is exactly what an individual assessment is designed to find out.
Which lasts longer, an implant or a bridge?
Published studies report high ten-year survival for implants, and they often outlast bridges, which are more likely to need replacing after ten to fifteen years. Neither is guaranteed, and how well you care for it, along with your gum health, matters most.