Lose a tooth and you have three sensible ways to replace it: an implant, a bridge or a denture. None of them is right for everyone. Here is how each one works, what it costs you in trade-offs, and why leaving the gap is rarely the bargain it looks like.
Why a gap is not just a gap
Teeth hold each other in place. Take one out and the teeth on either side gradually tip and drift into the space, while the tooth above or below, with nothing to bite against, slowly over-erupts and grows longer. Over a few years that can turn one simple gap into a bite that no longer meets properly and teeth that are harder to clean, which invites decay and gum trouble.
There is also the bone underneath. The jawbone that used to support the missing tooth is no longer being used, and the body quietly reabsorbs it. That is why a long-standing gap often shows a dip in the gum and a thinner ridge of bone. It is not painful, so it is easy to ignore, but it can limit your options later and change the way the lower face sits.
None of this means you must replace every missing tooth the moment it is gone. It means the decision deserves a proper look rather than being left by default, because the gap tends to cost you slowly whether you notice or not.
Option one: a dental implant
An implant is a small titanium post placed into the jawbone to act as a replacement root, with a crown built on top. It stands on its own, so it does not touch the neighbouring teeth, and it stimulates the bone in a way that helps slow the shrinkage a gap would otherwise cause.
The upsides are that it is the closest thing to a natural tooth, it is cleaned like a normal tooth, and it can last a very long time when it is well looked after. The trade-offs are that it involves minor surgery, it needs enough healthy bone to anchor into, and the whole process takes months because the post has to fuse with the bone before the crown goes on. It also costs more up front than the other options.
Implants suit people in reasonable general health with enough bone, who are happy to invest more now for a longer-lasting, standalone result. Heavy smoking, uncontrolled diabetes or significant bone loss can make them trickier, which is part of what we assess before recommending one.
Option two: a bridge
A bridge fills the gap with a false tooth that is anchored to the teeth on either side. Those neighbouring teeth are prepared and crowned, and the replacement tooth is joined between them, so the whole thing is fixed in place and does not come out.
The upsides are that it is quicker than an implant, usually a matter of weeks rather than months, it needs no surgery, and it feels solid and permanent. The main trade-off is that it relies on the two supporting teeth, which have to be trimmed down to hold the crowns, even if they were perfectly healthy. If one of those anchor teeth later has a problem, it can affect the whole bridge. A bridge also does nothing to preserve the bone under the gap.
Bridges suit people who want a fixed result without surgery, particularly where the neighbouring teeth already have fillings or crowns and would benefit from being restored anyway. They are less appealing when the teeth beside the gap are pristine, because you are then reshaping healthy teeth to do the job.
Option three: a denture
A denture is a removable replacement. For a single missing tooth this is usually a partial denture, a small plate that clips around the remaining teeth and can be taken out for cleaning. It replaces one tooth or several, and it can often be made without touching the neighbouring teeth much at all.
The upsides are cost and simplicity. A denture is the most affordable of the three, it needs no surgery, and it can be fitted relatively quickly. The trade-offs are that it is removable, which some people never quite warm to, it can feel less stable when eating than a fixed option, and it needs taking out and cleaning daily. Like a bridge, it does not stop the bone under the gap from shrinking, so it may need adjusting or remaking over time as the ridge changes shape.
Dentures suit people who want a lower-cost option now, who are replacing several teeth at once, or for whom surgery is not suitable. They are also a reasonable stepping stone while you decide on something more permanent.
How to weigh them up
The honest summary is that you are trading cost, time and how permanent it feels. An implant costs the most and takes the longest, but stands alone and helps protect the bone. A bridge is quicker and fixed, but leans on the neighbouring teeth. A denture is the most affordable and least invasive, but it comes out and offers the least stability.
Which one is right depends on where the gap is, how much bone you have, the state of the teeth around it, your general health, and your budget. A gap right at the front carries different priorities from one at the back, and someone replacing a single tooth faces a different decision from someone replacing several.
Because implants, bridges and dentures all vary so much from person to person, we do not put a price on any of them here. After an examination we give you a written quote before we start, with the real options for your mouth laid out plainly rather than a one-size answer.
What happens at the visit
We start with an examination and X-rays so we can see the bone and the neighbouring teeth, not just the gap. A consultation is $60, and where we need a wider view of the whole jaw for planning, an OPG scan is $100. From there we can tell you honestly which options are realistic for you and which are not worth the money.
You will leave with a written plan and a quote, and no pressure to decide on the spot. We are at the Airport Shopping Centre with free parking at the door, and airport staff get a 15 percent discount, which is worth mentioning if you work on the precinct.
Quick questions
- What happens if I just leave the gap?
- Often the neighbouring teeth tip into the space, the opposing tooth grows longer, and the jawbone under the gap gradually shrinks. It is not painful, but it can change your bite and make cleaning harder over time, which is worth weighing up.
- Which should I choose, an implant, a bridge or a denture?
- There is no single right answer for everyone. An implant lasts long and stands alone but costs more and takes months. A bridge is fixed and quicker but leans on the neighbouring teeth. A denture is affordable and removable. The right choice depends on your mouth, health and budget.
- How much does replacing a tooth cost?
- It varies too much to list a price, because it depends on the option, the site and the state of the surrounding teeth. After an examination we give you a written quote before we start.
- Do I need to replace a back tooth no one can see?
- Not always, but back teeth do a lot of the chewing and still hold the bite together, so leaving the gap can let other teeth drift. We will give you a straight view of whether replacing it is worth it for you.
Sources: New Zealand Dental Association, patient guidance on tooth replacement · Te Whatu Ora | Health New Zealand, oral health information. This article is general information, not a substitute for an examination and personal advice from a dentist. If you're in pain or unsure, book a visit or call 09 964 0508.
