When a family reaches the point of deciding on an implant rehabilitation for an elderly parent, the question heard most often is: how long will it last? It is a reasonable question, but the answer almost always concerns the prognosis of the implants, not that of the patient. The question that really matters is a different one, and usually nobody asks it: who will take care of that prosthesis every day, ten years from now?

Someone building a house for their parents does not usually choose the most striking staircase. They choose the one beside which, one day, a stairlift could be fitted. Not because they expect the worst, but because they know that a well-designed house must also work in the life still to come, not only on moving day. After a certain age, the same principle applies to a dental prosthesis.

How long do implants last

Let us start with the reassuring part. Dental implants today are a treatment with extensively documented long-term results. Even in the most complex surgical solutions, such as implants anchored in the zygomatic bone for people who have lost a great deal of bone in the upper arch, a review of sixty-eight studies calculated a cumulative survival rate above ninety-five per cent at twelve years.

There is, however, a detail worth knowing. In clinical studies, “survival” means something precise and limited: the implant is still in place. It does not say whether the patient chews well, whether the gums and bone around it are healthy, or whether the prosthesis can be cleaned. It is an indicator of the implant, not of the person wearing it.

For a fifty-year-old, the difference is small. For an eighty-year-old it can become large, because in the meantime many things that have nothing to do with the implant may change: general health, manual dexterity, eyesight, the ability to attend check-ups regularly. This is why the question “how long will it last” is necessary but not sufficient.

When a fixed solution makes sense

Let us clear up a misunderstanding straight away: age alone is not a contraindication to implants. A review published in 2017 in Periodontology 2000 by a group of Swiss dentists with expertise in gerodontology draws a clear distinction between two populations.

On one side are the so-called young old, still fully independent, who have often lost only a few teeth. On the other are people, generally over eighty-five, whose lives are more frequently marked by dependency, multiple illnesses and frailty. The two situations call for different treatment solutions.

The same authors list the most typical indications for implants in advanced age. Implants are used to avoid a removable partial denture, to preserve a partial denture the patient already wears well, to stabilise one that tends to move, or to retain a complete denture.

This last option deserves attention, because families are often unaware that it exists. Between the conventional denture and fixed teeth there is a middle way: a removable prosthesis that clips onto a few implants, stable while chewing, and that can be taken out for cleaning.

On the surgical side, the recommendation is clear: keep the burden on the patient to a minimum. Coexisting illnesses are more frequent, and every additional procedure carries a greater biological cost than it would at forty. The authors note that short or reduced-diameter implants are now used more and more often, and they recommend three-dimensional planning that allows less invasive procedures and avoids staged surgery.

In short, a fixed solution makes sense when the patient is independent, their general health is stable, their hands and eyesight allow thorough hygiene, and it is realistic that they will attend regular check-ups for many years. When one or more of these conditions falters, a fixed prosthesis is not necessarily the wrong choice. It must, however, be designed with care, with a great deal of care…

The patient’s history matters

An older person who has lost many teeth almost always has a history behind them. One of the main causes of tooth loss in adulthood is periodontitis, the chronic inflammation of the tissues that support the teeth. A history that does not end with the last extraction…

A meta-analysis of prospective studies published in 2025 in the Journal of Periodontal Research compared patients with and without a history of periodontitis. Those who had had it showed a risk of implant loss about 75 per cent higher. Beyond ten years of follow-up the risk was about double, and it rose further in rapidly progressing forms of the disease. The risk of peri-implantitis, the equivalent of periodontitis around implants, was also roughly three times higher, with results that varied more from study to study.

These figures should be read in proportion. They do not mean that people who have had periodontitis should not receive implants: they mean that their biology must be understood, respected and monitored over time. A history of periodontitis is not a contraindication. It is valuable information for deciding how often to check, how to design the prosthesis and how much weight to give to maintenance therapy.

Maintenance is part of the treatment

An implant is not “treated” only on the day it is placed. It is cared for throughout all the years that follow. The European consensus conference on the prevention of peri-implant diseases, published in 2015, estimated a mean frequency of superficial inflammation of the gums around implants, mucositis, at around forty-three per cent of patients, and of peri-implantitis at around twenty-two.

These are average estimates, drawn from very different studies, so they should be taken as orders of magnitude rather than precise measurements. The conclusions of the expert group, however, are very practical. Mechanical plaque removal performed by the patient is an effective preventive tool.

In people who have already developed mucositis, the absence of regular check-ups is associated with a greater risk that the inflammation will progress. And implant-supported prostheses must be built so as to allow home hygiene, probing and professional plaque removal.

Home hygiene is the key to this entire article. A prosthesis that the patient cannot clean is not a cosmetic detail: it is a clinical problem that will develop over time.

With age, keeping up this routine becomes harder, and not for lack of goodwill. A 2022 review, again in Periodontology 2000, points out that in older people cleaning often deteriorates because of reduced manual dexterity or eyesight. Added to this is immunosenescence, the ageing of the immune system, which makes the tissues less able to defend themselves.

The authors also observe that a systematic maintenance programme, such as the one offered to younger patients, becomes difficult to guarantee when the person lives in a care facility or in hospital.

Tomorrow’s patient

Every treatment plan for an older person should take a second patient into account: the same person eight or ten years from now. They may still be independent and in good health, and that is what we all hope for. But responsible planning must also consider the other possibility: that at some point help and assistance will be needed, including for daily oral hygiene.

This is not a prediction, it is prudent design!

With age, the likelihood of illnesses that reduce mobility or, at times, memory increases, and the mouth is one of the places where these difficulties can turn into clinical problems.

What does research say about implants in people with neurodegenerative diseases? Surprisingly little, in fact very little. A review published in 2026 in Clinical Oral Implants Research by the gerodontology schools of Geneva and Zurich began as a systematic review. It examined 634 papers without finding a single one that met the required criteria.

The few experiences available, seven papers, mostly single case reports, are nonetheless encouraging in the early stages: improvements in chewing, in quality of life and even in body weight, particularly in patients with Parkinson’s disease. In the advanced stages, however, the suitability of implants remains uncertain. The authors point to a precise course of action: follow the progression of the disease over time and adapt the rehabilitation when needed.

Designing tomorrow’s prosthesis today

And this is where the perspective shifts. In the same 2017 review, the Swiss group wrote that implant rehabilitations in older people should be designed so that they can be modified. They would become low-maintenance prostheses or, if necessary, be removed, to make hygiene and comfort easier in the last phase of life.

This is the stairlift in our house. A well-designed prosthesis is not only attractive and stable today: it anticipates from the outset how it can be simplified tomorrow, without forcing a frail person to face demanding procedures precisely when their strength is lowest.

There is one more reason to think about this in good time, and it concerns the brain more than the mouth. A review published in 2014 in Gerodontology points out that with age, muscular skill and the ability to adapt to a new prosthesis decline.

A Japanese study of older people with dementia admitted to a geriatric hospital followed those who received a removable prosthesis for six months. About one in five had not accepted it, and those who rejected it had, on average, lower cognitive performance. There are, on the other hand, few studies on implants in people who have already lost their independence.

The practical consequence is simple. If a removable solution might be needed one day, it is worth asking from the outset how one would get there, and which step would be easier to face.

A removable prosthesis is not a fallback

In the popular imagination, a removable prosthesis is the solution for those who cannot afford anything else, or for those who have come too late. It is an idea worth reconsidering.

A Japanese cohort study, published in 2025 in the Journal of Prosthetic Dentistry, followed almost 187,000 people over the age of seventy-five. Among those who had markedly lost contact between the teeth of the two arches, a well-fitting removable prosthesis was associated with lower mortality compared with a poorly fitting prosthesis or no prosthesis at all.

It is an observational study, and it does not prove that the prosthesis prolongs life. Many other factors may explain the association. It does, however, say something important: a removable prosthesis that works well is by no means a second-class solution.

The 2014 review adds a further element. Implant-stabilised complete dentures significantly improve chewing efficiency and can counteract, into late old age, some of the effects of tooth loss on oral health-related quality of life. It is a solution that combines the stability of implants with the possibility of taking the prosthesis out to clean it, and of simplifying it if circumstances change.

The wish to have fixed teeth is legitimate, and nobody should dismiss it. But a wish is not a clinical indication. The best choice comes from an honest comparison of all the possible alternatives, not from taking for granted that a fixed prosthesis is always the ideal choice.

Questions to bring to the consultation

Very often a son or daughter attends a consultation of this kind. Their presence is valuable: the person accompanying sees the parent’s daily life better than anyone else, and can help ask the questions that matter.

The first concerns time: how do you envisage this prosthesis in ten years, and what would happen if my father or mother could no longer clean it on their own? The second concerns maintenance: how often will check-ups and professional hygiene sessions be needed, and how exactly is this prosthesis cleaned at home?

The third concerns reversibility: can this prosthesis be simplified or modified in the future, and what would that involve? The fourth concerns the procedure: how many surgical sessions does it require, how demanding is it, and how does it fit with the treatments the patient is already receiving? It is useful to bring an up-to-date list of medications.

The last, perhaps the most important: what are the alternatives, including a removable prosthesis on implants, and why, in this case, do you recommend one solution rather than another?

Planning of this kind usually involves several professionals: the surgeon, the hygienist, the dental technician, and sometimes the family doctor or the geriatrician. Someone needs to hold all the threads together, and as a rule this is the prosthodontist: a director who knows the script well right through to the final scene, not just the first. A good answer to the questions we have listed will also tell you a great deal about the quality of that direction.

One last piece of advice for those accompanying a parent. Observe how your parent looks after their mouth today: whether they do it easily, whether they need help, whether they forget something. This is information that no X-ray can provide, and it is worth as much as a clinical examination.

A prosthesis that ages with its wearer

The medicine of ageing asks us to look at the trajectory ahead rather than the snapshot. The best prosthesis for an older person is not necessarily the most impressive one on the day it is fitted. It is the one that remains easy to maintain, to clean and to adapt for all the years to come, even when the patient changes and becomes frail.

Sometimes a fixed prosthesis on implants may be indicated. At other times a removable prosthesis, anchored or not to a few implants. In every case it should be a choice made with an eye not only on the person sitting in the dental chair today, but also on the person they may be ten years from now.

When we think about the health and the smile of our parents, do we picture the scene on the day after the prosthesis is fitted, or ten years from now, in the hands of whoever will be looking after it?

Frequently asked questions

Is advanced age a contraindication to dental implants? No: age alone is not. What matters more is whether the person is independent, whether their general health is stable, whether their hands and eyesight allow thorough hygiene, and whether they will be able to attend regular check-ups for many years.

Can someone who has had periodontitis receive implants? Yes. A history of periodontitis is associated with a higher risk of implant loss and of peri-implantitis, but it is not a contraindication: it indicates how often to check, how to design the prosthesis and how much weight to give to maintenance.

What is a removable prosthesis on implants? It is a middle way between the conventional denture and fixed teeth: a prosthesis that clips onto a few implants, stays stable while chewing and can be taken out for cleaning, or simplified if circumstances change.

What is worth asking at the first consultation? What the prosthesis will be like in ten years, how often check-ups and professional hygiene are needed, whether it can be simplified in the future, how demanding the procedure is and what the alternatives are, including a removable prosthesis on implants.

Further reading

References

  1. Chrcanovic BR, Albrektsson T, Wennerberg A. Survival and complications of zygomatic implants: an updated systematic review. J Oral Maxillofac Surg. 2016;74(10):1949-1964. DOI: 10.1016/j.joms.2016.06.166
  2. Schimmel M, Müller F, Suter V, Buser D. Implants for elderly patients. Periodontol 2000. 2017;73(1):228-240. DOI: 10.1111/prd.12166
  3. Annunziata M, Cecoro G, Guida A, et al. Effectiveness of implant therapy in patients with and without a history of periodontitis: a systematic review with meta-analysis of prospective cohort studies. J Periodontal Res. 2025;60(6):524-543. DOI: 10.1111/jre.13351
  4. Jepsen S, Berglundh T, Genco R, et al. Primary prevention of peri-implantitis: managing peri-implant mucositis. J Clin Periodontol. 2015;42 Suppl 16:S152-S157. DOI: 10.1111/jcpe.12369
  5. Müller F, Srinivasan M, Krause KH, Schimmel M. Periodontitis and peri-implantitis in elderly people experiencing institutional and hospital confinement. Periodontol 2000. 2022;90(1):138-145. DOI: 10.1111/prd.12454
  6. David L, Maniewicz S, Chebib N, Gold G, Srinivasan M, Müller F. Implant therapy in patients with neurodegenerative diseases: a scoping review. Clin Oral Implants Res. 2026;37(3):237-246. DOI: 10.1111/clr.70080
  7. Müller F. Interventions for edentate elders: what is the evidence? Gerodontology. 2014;31 Suppl 1:44-51. DOI: 10.1111/ger.12083
  8. Taji T, Yoshida M, Hiasa K, Abe Y, Tsuga K, Akagawa Y. Influence of mental status on removable prosthesis compliance in institutionalized elderly persons. Int J Prosthodont. 2005;18(2):146-149. PMID: 15889663.
  9. Mameno T, Otsuki N, Takeuchi S, Yamamoto R, Ikebe K. Removable denture use, fit, and all-cause mortality in older adults with reduced occlusal support: the OHSAKA study. J Prosthet Dent. 2025;133(6):1505-1511. DOI: 10.1016/j.prosdent.2024.10.037

The information in this article is for general educational purposes and does not replace an individual clinical assessment. Author: Dr. Gaetano Calesini, medical doctor and specialist, Medical Director of Studio Calesini srl.