By Dr. Gregg Barry · Published 28 May 2026
It’s one of the questions we get asked most often before someone commits to treatment: “But what if it fails?” And we love that people ask it, because it means they’re thinking about this the way we do — as a long-term investment, not a quick fix. So here’s the honest answer. Yes, dental implants can fail. Anything placed in the body can. But failure is genuinely uncommon, the reasons behind it are well understood, and most of them are things we can plan around.
Implants are one of the most predictable treatments in modern dentistry. We’ve placed and restored a lot of them, and we’ve also seen what happens when things aren’t done carefully. So let’s walk through it properly: how often implants actually fail, what causes it, the warning signs to watch for, and the practical things that tip the odds firmly in your favour.
Can dental implants actually fail?
Yes — but it’s uncommon. A 2024 meta-analysis found more than 9 in 10 dental implants are still functioning well at 10 years, with roughly 4 out of 5 still going strong after 20.
That figure comes from a large review published in Clinical Oral Investigations in 2024, which pooled two decades of implant survival data. A separate systematic review in the Journal of Dentistry put 10-year survival between 93% and 96%. Look, those are genuinely excellent numbers — very few medical or dental treatments perform that reliably over that long. But notice what they also tell you: a small percentage do fail. We’d rather be straight with you about that than pretend implants are infallible. The good news is that the things which push an implant into that small failure group are, for the most part, predictable and manageable.
What actually causes a dental implant to fail?
Most implant failures trace back to a handful of causes: infection around the implant (peri-implantitis), smoking, poorly controlled diabetes, heavy grinding, or an implant that never fully fused to the bone in the first place.
Here’s the honest breakdown of the big ones:
- Peri-implantitis — this is gum disease around an implant. Plaque builds up, the gum and bone around the implant become inflamed, and over time the supporting bone is lost. It’s the single most common reason implants fail in the long term, and it’s largely preventable with good hygiene and regular maintenance.
- Smoking — we can’t sugar-coat this one. Smoking impairs healing and blood supply to the gums and bone, and it’s one of the strongest risk factors for implant failure. We advise stopping at least two weeks before surgery and through the healing phase.
- Uncontrolled health conditions — poorly managed diabetes, for example, slows healing and raises infection risk. Well-controlled diabetes is usually fine; it’s the uncontrolled version that’s the problem.
- Excessive bite force — if you grind your teeth heavily (bruxism), the constant overload can stress an implant. This is fixable, often with a simple night guard.
- Failed osseointegration — occasionally an implant just doesn’t fuse to the bone in those first crucial weeks. It’s rare, and when it happens we can usually try again after the site has healed.
What you’ll notice about that list is how much of it is about you and your circumstances rather than the implant itself. That’s why a proper assessment beforehand matters so much — it’s where we spot the risks before they become problems.
What are the warning signs of a failing implant?
A healthy implant should feel like a natural tooth. The warning signs of a failing one — looseness, persistent pain, swelling, gum recession, or bleeding around the implant — usually develop gradually, not overnight.
The ones we tell our Dublin patients to watch for are: an implant crown that feels like it’s moving or shifting, ongoing discomfort or pain (a settled implant shouldn’t hurt), gums that are red, swollen, or bleeding around the implant, gum recession that starts to expose the metal, or a change in how your bite feels. None of these mean disaster — they mean “come in and let us have a look.” Caught early, peri-implantitis can very often be treated and the implant saved. Left for months, the odds get worse. This is exactly why we’re a bit evangelical about regular check-ups and hygiene visits: they’re how we catch the small things before they become big ones.
What’s the difference between early and late implant failure?
Early failure happens within the first few months, before the implant fuses to the bone. Late failure happens years later, almost always from peri-implantitis — gum disease around the implant.
It’s a useful distinction because the two have different causes and different fixes. Early failure is about healing — the implant needs to integrate with your jawbone in a process called osseointegration, which takes roughly three to six months. If something disrupts that (infection, smoking, too much load too soon, or simply biology not cooperating), the implant won’t take hold. If you’d like to understand what that healing period actually looks like week by week, we’ve written a full guide on dental implant recovery. Late failure, on the other hand, is about maintenance — an implant that integrated beautifully can still be lost years later if gum disease is allowed to take hold around it. Both are largely preventable, which is the whole point.
Can a failed dental implant be saved or replaced?
In most cases, yes. A failed implant is removed, the site heals for a few months — sometimes with a bone graft — and a new one is placed. A single implant with us is €3,000 to €3,500, placement and crown.
Nobody wants to hear that an implant has failed, but it’s rarely the end of the road. If we catch peri-implantitis early, treatment can often stop the bone loss and keep the existing implant. If the implant genuinely has to come out, removal is usually straightforward, and once the area has healed (a graft is sometimes needed to rebuild bone, typically pushing the cost into the €3,500–€5,500 range for a single tooth) a replacement can go in. For a full walkthrough of what placing a single implant involves — the process, the timeline, the costs — see our single tooth implant guide. And if bone loss is part of your picture, our piece on dental implants and bone loss goes into grafting in more detail.
How do we reduce the risk of implant failure at Docklands?
The biggest predictor of long-term implant success is planning — careful assessment, 3D imaging, the right surgical technique, and honest patient selection. At Docklands Dental in Dublin, we plan complex cases alongside specialist oral surgeons.
A lot of implant failure is designed out before a single instrument touches your mouth. We assess your bone, your gums, your bite, your general health, and your habits, and we use 3D imaging to plan exactly where an implant should sit. The surgery itself is carried out at ISCD by specialist oral surgeon Dr. Marie O’Neill, FFD (OS) RCSI, so that the surgical phase is handled by a specialist and the restorative work is done here at Docklands — the right person for each part of the job. After that, the ball is partly in your court: good brushing, not smoking, and keeping up your hygiene appointments do an enormous amount of the heavy lifting. We’ll also be honest if we don’t think you’re a good candidate, or if the timing isn’t right. You can read more about how we approach the whole process on our dental implants page. That honesty upfront is genuinely the best insurance policy against failure later.
Thinking about implants? Let’s have a proper conversation
If you’re considering implants — or you’ve got an existing one that’s worrying you — the most useful next step is a proper assessment so we can give you a straight answer about your particular situation. No pressure, no hard sell, just an honest conversation about what’s possible for you.
You can reach us at:
Docklands Dental
1 Forbes Street, Grand Canal Dock, Dublin 2, D02 FN53
Phone: 01 636 0192
Email: hello@docklandsdental.ie
Web: docklandsdental.ie
This article was written by Dr. Gregg Barry, principal dentist at Docklands Dental, Dublin 2.
Frequently asked questions
How common is dental implant failure?
Failure is uncommon. A 2024 meta-analysis in Clinical Oral Investigations found that more than 90% of dental implants are still functioning well at 10 years, with approximately 4 out of 5 surviving at 20 years. A separate Journal of Dentistry review reported 10-year survival between 93% and 96%. The small percentage that do fail are usually linked to smoking, gum disease (peri-implantitis), uncontrolled health conditions, or excessive bite force.
Does smoking cause dental implant failure?
Smoking is one of the strongest risk factors for implant failure because it impairs healing and the blood supply to the gums and bone. It increases the risk of both early failure (failed integration) and late failure (peri-implantitis). We advise stopping smoking at least two weeks before implant surgery and throughout the healing phase to give the implant the best possible chance of long-term success.
Worried about an implant, or considering one? You can book an appointment online or call 01 636 0192 and we will arrange an implant assessment with one of our dentists.
