How Long Do Dental Implants Last? Real Data at 10 and 20 Years
Leggi in ItalianoIn brief — A dental implant lasts, on average, far longer than most people think. Twenty-year studies document survival rates of 95-97%. The enemies of longevity are few and well-known: smoking, untreated periodontitis, absence of follow-up. Maintenance makes the difference between an implant that lasts a lifetime and one that is lost.
It is the question that comes first. Before knowing how it is placed, how much it costs, whether it hurts. “Doctor, how long does it last?”
The honest answer is: it depends. But the numbers help explain what it depends on.
What long-term studies say
Moraschini et al. (2015, Int J Oral Maxillofac Surg) analysed 23 longitudinal studies with follow-up exceeding 10 years, totalling over 7,000 implants. Mean survival rate: 94.6% at 10+ years.
Lemos et al. (2016) extended the analysis to studies with 15-20-year follow-up. Result: survival of 95-97%. Out of one hundred implants placed, after twenty years at least ninety-five remain in the mouth.
For perspective: a traditional bridge on natural teeth has a mean survival of 75-85% at 15 years. The implant wins, and by a considerable margin.
Survival is not success
There is a distinction that matters. An implant “survives” if it is still in the bone and supports a prosthesis. It is a “success” if it has not lost bone beyond physiological limits, shows no inflammation, and functions without problems.
Success rates are slightly lower than survival rates — around 90% at 10 years. The difference is mostly accounted for by peri-implantitis: an inflammation of the tissues around the implant that resembles periodontitis and, like periodontitis, destroys bone.
Peri-implantitis affects approximately 20% of implants and 10% of patients at 10 years (Derks & Tomasi 2015, J Clin Periodontol). It is not a death sentence — it can be treated and managed — but it is the reason why periodic check-ups are not optional.
The factors that determine longevity
Smoking
The most documented risk factor. It doubles the implant failure rate. It accelerates peri-implant bone loss. If you smoke and want implants, the first thing to do is quit.
Periodontitis
Those who have had periodontitis face a 2-3 times greater risk of peri-implantitis. The reason is biological: the same bacterial profile, the same inflammatory susceptibility. But with rigorous periodontal maintenance, results approach those of patients with no periodontal history.
Hygiene
It sounds obvious. It is not. The implant does not decay, but the tissues around it become inflamed exactly like those around a natural tooth. Toothbrush, interdental brush, floss — same discipline as before.
Surgical quality
An implant placed in insufficient bone, at the wrong angulation, without respect for soft tissues, lasts less. Planning — CBCT, analysis of available bone, possible bone regeneration — is the foundation on which everything else rests.
Prosthetics
A perfect implant with the wrong prosthesis fails. Occlusal overload, lack of framework passivity, imprecise connections — these are causes of failure that have nothing to do with biology.
The implant lasts; the crown, less so
A distinction patients rarely know. The implant — the osteointegrated titanium screw — can remain in function for decades without problems. The prosthetic crown, like any manufactured device, wears out. Ceramic chips, resin discolours, margins no longer seal after years of function.
Expecting a crown replacement every 15-20 years is reasonable. It is not implant failure — it is routine maintenance.
What twenty years of maintenance cost
Two professional hygiene sessions per year. One annual radiograph. Occasional prosthetic component replacements. Spread over twenty years, these figures make the implant the most efficient investment in rehabilitative dentistry.
The real cost is not the implant. It is not maintaining it.
Key references:
- Moraschini V, et al. Evaluation of survival and success rates of dental implants reported in longitudinal studies with a follow-up period of at least 10 years: a systematic review. Int J Oral Maxillofac Surg. 2015;44(3):377-388. DOI
- Derks J, Tomasi C. Peri-implant health and disease. A systematic review of current epidemiology. J Clin Periodontol. 2015;42 Suppl 16:S158-71. DOI
- Lemos CAA, et al. Dental implant survival in grafted areas: a systematic review and meta-analysis. J Evid Based Dent Pract. 2016;16(4):216-237.
Want to know if your implants are healthy? Book a peri-implant check-up.
FAQ
- How long does a dental implant last?
- Twenty-year studies show survival rates of 95-97%. A well-placed implant, in a patient who maintains hygiene and regular check-ups, can last a lifetime. The prosthetic crown may need replacement after 15-20 years due to wear or aesthetics.
- What causes a dental implant to fail?
- The main risk factors are: smoking (doubles failure risk), untreated periodontitis, poor oral hygiene, uncontrolled diabetes, occlusal overload. Peri-implantitis — an inflammation similar to periodontitis — is the leading cause of long-term implant loss.
- Do dental implants need to be replaced?
- The implant — the titanium screw in the bone — generally does not. The prosthetic component (crown, bridge) may require maintenance or replacement after 15-20 years, like any prosthetic device. Connection screws can loosen and need retightening.
- How often should implants be checked?
- At least every 6-12 months with professional hygiene and peri-implant probing. Patients with a history of periodontitis need check-ups every 3-4 months. Annual radiographic monitoring verifies peri-implant bone stability.
- Does periodontitis affect implant longevity?
- Yes, significantly. Patients with a history of periodontitis have a 2-3 times greater risk of developing peri-implantitis. But with a rigorous maintenance protocol — frequent recalls, regular professional hygiene — long-term results are comparable to patients without periodontal history.
- Can a dental implant last a lifetime?
- Yes, if conditions are favourable: good bone volume, no severe parafunctions, maintained hygiene, regular check-ups. Lekholm's studies (2006) on Brånemark implants at 20+ years confirm that the majority remain in function.
References
Looking for a specialist?
Implantologia a Frosinone →Impianti dentali, carico immediato e rigenerazione ossea
Need a professional opinion?
Book an appointment at Dr. Bruschi's practice in Frosinone. First visit includes full diagnosis and personalised treatment plan.
Stai valutando un impianto dentale?
Ho scritto una guida in 8 capitoli che spiega tutto quello che un paziente dovrebbe sapere prima di sedersi in poltrona. Niente marketing — solo fatti, casi studio e una checklist per fare le domande giuste.
Scarica la guidaStay Updated
New articles on periodontology, implantology and oral surgery — delivered to your inbox.
Comments
Loading comments...
Leave a comment