A dental implant is a significant investment — five to six thousand dollars per tooth, months of treatment — so the obvious question before committing is “how long will it actually last?” The honest answer has two parts, and the gap between them is where most of the confusion sits.

The short answer — two lifespans in one tooth

A dental implant isn’t one thing. It’s two things joined together:

  • The implant itself — the titanium post in the jawbone. This is the bit that integrates with your bone and does the work of a tooth root.
  • The crown — the ceramic or porcelain tooth on top, either screwed directly into the implant or cemented onto an abutment.

These two parts wear out on completely different timelines, and once you understand that, most of the “how long do implants last” confusion disappears.

The titanium post, well looked after, can last decades. Long-term clinical research following modern implant systems beyond ten years consistently reports survival rates above 90%, with many implants still functioning 20+ years after placement. In our practice we have patients whose implants were placed in their forties and are still going strong in their seventies — same implant, same position, working fine.

The crown on top is a different conversation. It’s subject to the same forces as a natural tooth — chewing, grinding, the occasional accidental bite on a cherry pit — and like any dental crown, it typically needs replacing somewhere between 10 and 20 years. Replacing the crown doesn’t mean replacing the implant. The post stays; a new crown is made and fitted.

So when someone asks “do implants last for life?” the real answer is: the implant often does; the tooth on top usually doesn’t. Budget for a crown replacement somewhere down the track.

What actually kills a dental implant

Implants don’t fail for mysterious reasons. They fail for a handful of specific, predictable reasons — and most of them are preventable if you know what to watch for.

Peri-implantitis — the number one killer

Peri-implantitis is gum disease around an implant. It’s the same bacterial story as periodontitis around a natural tooth: plaque builds up at the gumline, inflammation sets in, and over time the bone that supports the implant starts to recede.

Here’s the uncomfortable part — around an implant, you don’t have the same early warning signals as a natural tooth. No nerve means no ache. The bone can be quietly disappearing for a year or two before anything feels obviously wrong. By the time an implant feels loose, it’s usually too late to save.

Peri-implantitis is the single biggest reason an implant that survived the surgery, the healing, and the first few years ends up having to come out. Preventing it comes down to two things: daily cleaning around the implant and regular professional monitoring.

Smoking

Smoking is probably the most well-documented risk factor for implant failure. It reduces blood flow in the gums, slows healing during the critical integration phase, and increases the risk of peri-implantitis long-term. We’ve written about this in more detail in dental implants and smoking if you want the full picture. We don’t refuse to place implants for smokers, but we talk through the increased risk honestly before starting.

Uncontrolled diabetes

Controlled diabetes isn’t a barrier to implants. Uncontrolled diabetes is a genuine problem — it affects healing, immune response, and the gum tissue’s ability to maintain a seal around the implant. If your HbA1c is sitting high, we’ll usually want that brought into a safer range before placing the implant, working with your GP.

Bruxism without a nightguard

Heavy grinding — especially nighttime grinding — puts enormous load on an implant. Unlike a natural tooth, an implant has no periodontal ligament to cushion the force. Grinding can loosen screws, fracture the crown, and in severe cases contribute to bone loss around the post. If you grind, you need a nightguard. Non-negotiable.

Poor oral hygiene

Plain and simple — if you don’t clean around the implant properly, plaque bacteria will do their work. Implants don’t get cavities, but they absolutely get gum disease.

Inadequate bone support from day one

Some implant failures are really “implants that should never have gone in as they did.” Not enough bone width, not enough height, poor-quality bone, or placement too close to neighbouring structures. This is why we take a CBCT scan before any non-straightforward case — we want to know exactly what we’re working with before we drill. An implant placed in marginal bone is a failure waiting to happen.

If you want to go deeper on the failure modes, our article on implant failure covers the warning signs to watch for.

What actually preserves a dental implant

Good news — the list of things that keep an implant alive is short, practical, and mostly stuff you’re already doing for your natural teeth.

Twice-daily brushing. Same as your natural teeth, with particular attention to the gumline around the implant. A soft-bristle brush is fine.

Cleaning between the teeth, every day. This is the one most people underestimate. Healthdirect specifically recommends cleaning between the implant and your other teeth using floss, interdental brushes, or a water flosser. We usually suggest a combination — a small interdental brush for the space either side of the implant, plus floss or a water flosser for the area under the crown where bacteria love to hide.

Not smoking. If you only change one habit for the sake of your implant, this is it.

Treating grinding. A custom-fitted nightguard if you grind at night. They’re not expensive, and they protect both your implants and your natural teeth.

Six-monthly maintenance visits. This is where professional care earns its keep.

If you’re weighing up whether the long-term maintenance reality is worth the outcome, book an implant consult with Daniel at Biltoft Dental and we’ll walk you through what ongoing care actually looks like for your situation.

Why we schedule specific implant maintenance visits

A six-monthly check with an implant isn’t quite the same as a six-monthly check with only natural teeth. At Biltoft we schedule a specific implant maintenance component into the visit:

  • The right instruments. Standard metal scalers can scratch the surface of a titanium implant and actually make plaque adhesion worse. We use implant-safe instruments — typically plastic or titanium-tipped scalers — around the implant itself.
  • Probing and checking the seal. Gentle probing around the implant measures the depth of the gum pocket. Deepening pockets is one of the earliest signs that peri-implantitis is starting, often years before any visible problem.
  • Periodic X-rays. A periapical X-ray every year or two, depending on the situation, lets us check the bone level around the implant against the baseline from when it was placed. Early bone loss is the signal to act — while we still can.
  • A close look at the gum. Colour, bleeding on probing, any recession. We’re looking for anything that suggests the soft tissue seal around the implant is breaking down.

This isn’t upselling — it’s the difference between catching a small problem in time and finding out about it when the implant is already loose. If you want context on the broader cost of ownership including these maintenance visits, our dental implant cost guide covers it, and our full dental implants guide walks through what the whole treatment involves.

A realistic expectation to walk away with

If you’re considering an implant and you’re trying to work out whether it’s worth the money, here’s the honest framing I’d offer a patient in my chair:

  • The post is likely a long-term solution — decades, often for the rest of your life if you look after it.
  • The crown on top is a 10-to-20-year component, and budgeting for one replacement during the life of the implant is realistic.
  • The single biggest factor in whether your implant hits those numbers isn’t the surgery, the brand of implant, or even how much you paid — it’s what you do every day afterwards, and whether you keep up with professional maintenance.

Done well, an implant is one of the most durable things we put in a human mouth. Done carelessly, it’s an expensive lesson.

If you’d like a straight assessment of whether an implant is right for your situation — and what the long-term care realistically looks like — get in touch with the practice or give us a call on (02) 6672 1980. We’ll tell you honestly what we see.

Frequently asked questions

So how long do dental implants actually last? +

Two answers in one. The titanium post in the bone can last decades — long-term studies following implants past the ten-year mark report survival rates well above 90%, and many function for the rest of a patient's life. The crown screwed or cemented on top is a different story: it wears like any other tooth and typically needs replacing somewhere between ten and twenty years. Individual results vary.

What's the single biggest cause of implant failure? +

Peri-implantitis — gum disease around the implant. It's the same bacterial story as periodontitis around a natural tooth, but around titanium the bone loss can happen faster and quieter. It's the #1 reason an implant that was working perfectly for years ends up having to come out.

Does smoking really affect implant survival that much? +

Yes. Smoking reduces blood flow in the gums and slows healing, and it's been repeatedly shown to raise the risk of both early failure and later peri-implantitis. We don't refuse implants for smokers, but we have an honest conversation about the increased risk before proceeding.

Do I need to floss around an implant? +

Absolutely — arguably more carefully than around a natural tooth. Healthdirect specifically advises brushing twice a day and cleaning between the implant and neighbouring teeth using floss, interdental brushes, or a water flosser. We usually recommend a combination — a small interdental brush for the space around the implant and either floss or a water flosser for underneath the crown.

Can a failed implant be replaced? +

Often, yes — but not always straight away. Once the failed implant comes out, the bone usually needs time to heal, and sometimes a graft is required before a new implant can go in. It's not a simple swap, which is exactly why we focus so hard on keeping the first one alive.

How often should I see the dentist after getting an implant? +

Every six months as a baseline, and we usually schedule specific implant maintenance appointments within those visits. An implant needs slightly different tools and checks than a natural tooth — different instruments to clean it safely, periodic X-rays to check the bone level, and a close look at the surrounding gum for early signs of peri-implantitis.