Do you need a bone graft before a dental implant?

Some people who want a dental implant do not need a bone graft first, but a meaningful number do. If an implant is right for you, a 3D x-ray scan called a cone beam CT, also known as a CBCT, shows us which group you fall into.

For example:

If you lost the tooth years ago, or have worn a denture for a long time, a graft is more likely to be needed. If the tooth was removed by surgical extraction, or it was in the upper jaw, a bone graft might also be more likely.

In any situation, it is a routine procedure that is predictable and supports the success of the end result. Our patients who have gone through it tell us it was not the setback they thought or feared it would be.

If you have already been told you "don't have enough bone" for an implant, or you are quietly worried you will be, read on, as it is rarely the end of the road.

Your jawbone is not a fixed structure. It is kept in shape by the work it does. Every time you chew, the pressure travels down the tooth root and stimulates the bone around it, signalling it to stay dense and strong. When a tooth is lost, that signal stops.

What follows is a process called bone resorption. Without the tooth root, the jawbone in that spot has no reason to maintain itself, so the body gradually reabsorbs it. The most significant shrinkage happens in the first few months, but it continues slowly for years, and it never entirely stops on its own. The gum ridge can become narrower and shorter, until in some cases there is simply not enough bone to anchor an implant.

Two things speed the process up:

• Gum disease. Periodontal disease does not just attack the gums; it dissolves the bone that supports your teeth. If bone was already lost around a tooth before it came out, you start with considerably less.

• Long-term denture wear. A denture presses on the gum ridge rather than stimulating the bone beneath it. Worn for years, it speeds up resorption, which is why patients who have worn a denture for a long time often need bone grafting before a dental implant.

Nothing on this list means you will or won't need a graft, only that it is more likely and worth checking properly:

• The tooth was lost a long time ago. The longer the gap, the more time resorption has had to work.

• A denture worn for years. Pressure without stimulation thins the ridge, particularly in the lower jaw.

• A history of gum disease. Bone lost to periodontal disease does not grow back on its own, but a bone graft can help rebuild it. If you are not sure, these are the early signs of gum disease to look out for.

• An upper back tooth near the sinus. The maxillary sinus sits just above the upper back teeth, and as the bone shrinks it expands downwards. Sometimes a sinus lift (a specific type of graft) is needed to rebuild height.

• An extraction after infection or injury. A dental abscess or trauma can destroy bone quickly, leaving a deficit from the start.

These are the clinical factors set out in the Association of Dental Implantology's patient guidance on dental implants, which is the reference point we plan around: sufficient bone volume and quality to hold the implant is one of the core requirements for treatment.

Here is the part that reassures people most: you do not find out by guessing, and neither do we.

Implant consultations at Vere Dental are with Dr Caoimhe Doherty (BDS, MFDS RCS, MSc Implantology). If an implant is right for you, your consultation includes a 3D CBCT scan.

A CBCT scan is a low-dose, three-dimensional image of your jaw. It shows us exactly how much bone you have, its height, width and density, in the precise spot the implant would go. What a routine dental x-ray can only hint at, a CBCT scan measures. That means the decision is made on evidence, not on a "probably".

Dr Doherty plans every case with meticulous precision, and where gum health needs specialist attention, she works alongside Dr Giuseppe Mainas, our Specialist in Periodontics.

Just as often, the scan shows there is enough bone, and the worry was unfounded. We regularly see patients who arrive convinced they will be told no and leave with a straightforward plan. When a graft is needed, the scan tells us how much bone is missing and exactly which approach suits you, and you make the decision together with Dr Doherty, in plain language, before anything is booked.

A bone graft rebuilds the jawbone in the area where it has been lost, so an implant has a solid foundation to fuse to. The material varies with the case (your own bone, donor bone or a synthetic substitute), and the graft is usually allowed to heal and integrate for a few months before the implant is placed. In some cases, a small graft can be done at the same time as the implant.

What that means in practice: a graft typically adds roughly three to six months to your overall treatment time. If Dr Doherty removes the tooth here at the clinic, she may be able to place the graft at the time of the extraction or the implant, in which case no time is added to your treatment. A graft is priced separately from the implant itself, and you will always know the cost and timeline before you commit to anything.

Grafting at Vere Dental is carried out by two clinicians: Dr Caoimhe Doherty (BDS, MFDS RCS, MSc Implantology), who leads our implant planning, and Dr Giuseppe Mainas (DDS, MSc Periodontology, PhD), our Specialist in Periodontics, whose clinical work includes guided bone regeneration and sinus elevation.

Between them, straightforward and complex cases alike are planned and treated in-house.

If a tooth is coming out and an implant is even a possibility, the best time to protect the bone is at the extraction itself. Socket preservation, placing a small amount of grafting material into the socket at the time of extraction, helps the jawbone heal at full volume instead of shrinking. It takes minutes, and it can make the difference between a straightforward implant later and a bigger procedure.

Failing that, the simple advice is: don't leave the gap for too long. Bone loss is quiet and gradual, but the earlier an implant is placed, the more bone there usually is to work with.

Can I have a dental implant without a bone graft?

Yes, you might be able to, but it might not be the best way to proceed. Whether you can depends on how much bone remains where the implant would sit, and a 3D CBCT scan tells us that with certainty before you commit to anything.

I lost my tooth years ago. Is it too late for an implant?

It is rarely too late. Even after significant bone loss, a graft can usually rebuild enough bone to support an implant; the treatment simply takes a little longer. The only way to know where you stand is a scan.

We often find that "it is too late" mostly applies to patients who smoke. Even then, we are often able to help. The treatment will be longer and more involved, as you would need to stop smoking, but it is definitely worth it.

Does a bone graft add much to the cost?

It is an additional item, priced separately, and the amount depends on the type and size of graft needed. You will receive a written plan with the full cost before any treatment begins, so there are no surprises partway through.

Can the graft and the implant be done on the same day?

Sometimes, yes. A small graft can be placed at the same time as the implant. Larger grafts, including sinus lifts, usually need several months to heal before the implant is placed. Dr Doherty will tell you which applies to you after your scan.