Can a dental implant get a cavity?

No — decay happens when acid from plaque bacteria dissolves tooth mineral, and there is no tooth mineral in a titanium post or a ceramic crown. The Australian Dental Association puts it plainly: implants cannot develop tooth decay, but they can be affected by gum disease just like natural teeth. So an implant removes the risk of decay in that spot and leaves the risk of gum disease where it was. The natural teeth on either side can still decay too, so the area still needs cleaning every day.

Will a dental implant set off airport security scanners?

Almost never. The titanium post is small and sits inside bone, and it is generally not enough metal to trigger a walk-through detector. Body scanners do not typically flag it either. If you are ever asked, saying you have a dental implant is enough — there is no card or letter you need to carry.

Can you whiten a dental implant crown?

No. Whitening products work on natural enamel and dentine, and have no effect on porcelain or ceramic. This is worth thinking about in the right order: if you are planning to whiten your natural teeth and also have a crown made for the front of your mouth, whiten first, let the shade settle, then have the crown matched to the new colour. Otherwise the crown stays at the old shade while everything around it lightens.

How often does the crown on an implant need replacing?

There is no fixed schedule — it depends on how heavily you chew, whether you grind, and where in the mouth it sits. The crown is a working surface, so it can wear, chip or eventually need remaking, and the small screw holding things together can loosen over the years and simply need retightening. All of that is normal servicing rather than implant failure. Your dentist checks the crown and the screw connection at routine visits.

Am I too old for a dental implant?

Age by itself is rarely the deciding factor, and implants are placed for people well into later life. What matters far more is bone volume at the site, gum health, general health conditions such as diabetes control, medications that affect bone healing, and whether you smoke. There is a lower limit, though: implants are generally not placed until jaw growth has finished, which is assessed individually rather than by age — for some people that is later than they expect. An examination and a 3D scan answer the question for your situation better than your birth year does.

How Long Do Dental Implants Last? A Clear Guide

Dental implants are designed to last many years, and healthdirect describes them as usually successful — but no implant comes with a guarantee, and none of them are maintenance-free. The most useful thing to understand is that an implant is not a single object: the titanium post in your jaw and the crown on top of it age at completely different rates, and it is usually the crown that needs attention first.

How long dental implants last: the post and the crown are different

When someone says "implant", they usually mean the whole tooth replacement. Clinically it is at least three parts:

The post (the fixture). A small titanium screw placed into the jawbone, where the missing tooth root was. Over roughly the first three months the bone grows around it — a process called osseointegration, which is a long word for bone locking onto metal.
The abutment and screw. The connector between the post and the visible tooth, held with a small screw. Screws can loosen over years of chewing. That is usually a straightforward fix — the dentist retightens or replaces the screw — not a failure of the implant.
The crown. The visible porcelain or ceramic tooth. This is a working surface. It takes the full force of chewing every day, and like any working surface it wears, can chip, and can eventually need repair or replacement.

So when people talk about implants lasting a long time, they usually mean the post staying integrated in the bone, while the crown is a serviceable component with a shorter working life. Replacing a crown on a sound implant is a much smaller job than replacing the implant itself. That does not mean the post is permanent — bone can still be lost around it years later, which is what the rest of this article is about. The point is only that the two parts age differently.

What actually makes an implant fail

Failures are not random — they cluster around a handful of causes, each with a clear mechanism.

Gum and bone infection around the implant

A key late problem is peri-implantitis — what the Australian Dental Association describes as inflammation of the gums and bone loss around an implant. It works much like gum disease around a natural tooth: plaque bacteria collect where the gum meets the implant, the gum becomes inflamed, and if that continues, the bone holding the implant steady is gradually lost. An implant has no ligament or nerve supply the way a natural tooth does, so it tends to be quieter than a sore tooth. Left untreated, the ADA notes, it can make an implant loose and even fail. That is why routine check-ups matter.

Smoking

Smoking reduces blood flow in the gums and impairs healing, which matters most in the early months when bone is knitting onto the post. It also worsens gum disease generally, and the ADA lists smoking among the things that can make someone a poor candidate for an implant in the first place.

Poorly controlled diabetes

The issue is control, not diabetes itself. Well-managed blood glucose is compatible with implant treatment. Persistently high glucose impairs wound healing and the body's response to infection, so it raises risk during the healing phase and makes gum inflammation harder to settle later.

Grinding and clenching

Heavy grinding (bruxism) loads an implant well beyond normal chewing. A natural tooth sits in a slightly springy ligament; an implant is locked directly into bone and does not absorb shock the same way. Overload tends to show up as a chipped or fractured crown, a loosening screw, or bone stress around the post.

Not cleaning around it properly

The implant itself cannot decay. The tissue around it can still become diseased. Plaque left at the gum margin is the fuel for peri-implantitis, and the junction between crown and gum is a spot people commonly miss.

Early failure versus late failure

Early means the first few months, before the bone has grown around the post — healthdirect puts that healing at about three months. If integration does not happen, because of infection at the site, poor healing, or too much movement too soon, the implant will not become stable. This generally shows up at review appointments rather than coming out of nowhere.

Late means years afterwards, once the implant has been working normally. The causes shift: gum and bone disease around the implant, mechanical wear, screw loosening, or crown fracture. Late problems are usually gradual, which is good news — caught early they are far more manageable than caught late. You do not need to think about this daily; you do need the routine checks that pick it up.

What you actually control

A fair amount, and none of it is dramatic:

Clean around it every day. Brush as you would a natural tooth and clean between the teeth on either side. Your dentist or hygienist can show you the right tool for the shape of your implant — sometimes a small interdental brush works better than floss.
Keep your check-ups and hygiene visits. This is where most problems get caught early. The point is not the clean itself so much as someone measuring and looking at the gum around the implant while any change is still small.
Say something about grinding. If you wake with a sore jaw, notice your teeth flattening, or your partner mentions night-time grinding, tell your dentist. A custom night guard is often recommended to take the load off — at Park Road Dental that is $590 after an assessment, with the assessment quoted separately.
Don't smoke. If you do and you are considering treatment, raise it honestly beforehand — it changes the planning conversation.
Mention new medical conditions and medications. Diabetes control, medications affecting bone, and immune conditions all matter to how gum tissue behaves.

Warning signs worth an appointment

Ring the practice rather than wait for your next scheduled visit if you notice:

Gum around the implant that bleeds when you brush, or looks red and puffy
An implant or crown that feels loose, or moves at all
Pain when you bite on it
A bad taste, or bad breath that seems to come from that particular spot
Gum receding away from the implant, or metal starting to show

Most of these have straightforward explanations — a loose feeling is often a loosened screw rather than a loose post — but none of them should be judged at home. Bleeding gum tissue caught early is far easier to settle than bone loss found a year later. If something has broken or is painful right now, our emergency appointments page explains how to be seen quickly.

If an implant does fail, what then?

A failed implant can usually be removed. How involved the removal is depends on the individual case, and it is something we would talk through with you beforehand. The site is then allowed to heal, sometimes with a bone graft to rebuild the ridge, and after healing a replacement can be considered.

Whether a replacement is sensible depends on why the first one failed. If the cause was something addressable, that is a different conversation than if the underlying problem is unchanged. Sometimes the right answer is a different kind of tooth replacement, or none at all. We would rather say so than place something we do not think will serve you — if treatment is not in your interest, we will tell you.

How we approach this at Park Road Dental

Implants at Park Road Dental are planned and placed by Dr James Lee and Dr Harold Lee. Planning starts with a 3D CBCT scan taken on site, which shows bone volume and the position of nerves and sinuses before anything is decided. Reviews afterwards happen in the same rooms with the same people, so whoever placed it is whoever looks after it. Because the scan, the planning and every review are done here in Cheltenham, the records stay in one place if something changes years later.

Costs vary with the case: the number of teeth involved, whether grafting is needed, and the type of restoration all change the picture. We do not quote a figure before an examination — you receive a written, itemised quote afterwards, so you can take it away and think about it. For the detail of how the treatment itself works, our page on dental implant treatment covers the stages and timeframes, and the implant casebook shows how cases are planned.

Talk to us

If you have an implant that feels different, or you are weighing up whether one is right for you, we are happy to have an unhurried conversation about it. Ring the practice on (03) 9584 4949 or book online — we are at 155 Park Road, on the Bayside Melbourne side of things, open six days a week including Wednesday and Thursday evenings.

How Long Do Dental Implants Last, and What Makes One Fail?