How long can dental implants last, and what still needs maintenance?

The implant and the tooth on top age differently

An implant tooth has three parts: the implant itself, a post placed in the jawbone; the abutment, a connector that attaches to the implant; and the crown or prosthesis, the visible tooth fixed to the abutment. When people ask how long implants last, they usually mean the whole tooth, but the evidence treats the parts separately, and the answers differ.

The implant is the part with the longest record. A 2019 systematic review pooled ten-year results from long-term studies and found that the large majority of implants were still in place, with a point estimate in the mid-nineties percent; when the authors assumed that implants in patients who stopped attending had failed, the estimate fell. That is why "roughly nine in ten or more" is the honest summary rather than a single number. A 2024 meta-analysis that followed studies out to twenty years reported survival that stayed high over that period for the implants studied. These are population figures, not a promise about one implant in one mouth.

The crown, the abutment and the screw that joins them are mechanical components. They take chewing forces, grinding, temperature changes and time. A crown can chip or wear, a screw can loosen, and a cemented crown can lose its cement. These events are common enough that implant dentistry treats them as maintenance rather than failure, and they can usually be repaired or replaced without disturbing the implant underneath.

An evidence glossary in plain words

Implant studies use a vocabulary that is easy to misread. These are the terms that matter most when someone quotes you a figure.

Survival versus success

Survival means the implant is still in the jaw at the follow-up visit. It says nothing about whether the gum around it is healthy, whether bone has been lost, or whether the patient is happy with the tooth. Success adds conditions, such as no pain, no mobility, limited bone loss and no persistent infection, and different studies define it differently. Survival figures are at least as high as, and usually higher than, success figures for the same implants, so ask which one is being quoted.

Implant-level versus patient-level

Most figures count implants, not people. A patient with four implants who loses one counts as one failure in four at the implant level, but as one patient with a failure at the patient level. Patient-level figures are usually less favorable than implant-level figures for the same group, and they are closer to what you actually want to know.

Confidence intervals and prediction intervals

A pooled figure usually comes with a confidence interval, the range within which the true average probably sits. A prediction interval is wider and answers a different question: what range of results a new study, or a new clinic, might see. Fewer studies follow implants to twenty years and more patients drop out along the way, so estimates at that horizon carry more uncertainty than ten-year estimates.

Why older studies and newer designs differ

Long-term data describe implants placed a decade or two ago, with the surfaces, designs and planning tools of that time. Newer surfaces and materials, including zirconia ceramic as an alternative to titanium, have shorter track records, so their long-term figures are not yet known rather than better or worse. For how material choice is studied, see Ceramic versus titanium dental implants.

Why a practice cannot quote its own rate

A single office does not have enough implants followed for ten or twenty years under study conditions to produce a rate comparable with the published literature. Loul Dental Studio does not state a practice success rate, a lifespan guarantee or a replacement policy on this page.

What the survival figures leave out

Implant survival figures do not include the tooth on top. Reviews of implant-supported crowns record a steady background of technical events: ceramic chipping, screw loosening and loss of cement retention. Which events are more likely depends partly on how the crown is attached. Screw-retained crowns are easier to remove for repair, while cemented crowns avoid a screw opening in the chewing surface; the two approaches show comparable survival with different complication patterns.

None of this means something went wrong. A crown that needs re-tightening or re-making after years of chewing is a wearing part doing its job. The natural teeth beside the implant still need their own attention, including under crowns of their own; see Can a tooth under a crown still get a cavity?

What can shorten an implant's life

The implant depends on the gum and bone around it. The main threats are biological and mechanical.

• Peri-implant disease. Plaque around an implant can cause peri-implant mucositis, inflammation of the gum that is reversible with cleaning, and this can progress to peri-implantitis, in which supporting bone is lost. The 2017 World Workshop consensus found strong evidence that a history of gum disease, poor plaque control and the absence of regular maintenance raise the risk of peri-implantitis; it judged the evidence on smoking and diabetes as independent risk factors inconclusive, although both affect healing.
• Smoking. A systematic review and meta-analysis found higher implant failure among smokers than non-smokers, and FDA and ADA patient information note that tobacco use can slow healing after surgery.
• Poorly controlled diabetes. Diabetes is linked with gum disease and can interfere with healing after implant surgery; people whose blood sugar is poorly controlled develop gum disease more often, so your dentist will ask how well it is controlled.
• Grinding and clenching without a guard. Bruxism loads the crown, screw and implant beyond normal chewing and may be associated with more mechanical complications of implant restorations. A night guard can help protect the restoration, and the guard itself wears and needs checking.
• Poor cleaning access. A crown shaped so that floss or a small brush cannot reach the gum line lets plaque sit against the implant.
• Missed maintenance. A loose screw, early bone change or a bleeding gum is simple to address when found at a routine visit and harder after years without one.
• Medical conditions and medications. Tell your dentist about all health conditions and medications, since some affect bone healing and gum health. Whether an implant is a sensible choice in the first place is covered in Who may be a good candidate for a dental implant?

What maintenance looks like

Maintenance has two halves: what you do daily and what the practice does at intervals set by your risk.

• Home cleaning. Brush twice a day, clean around the implant at the gum line, and clean between the implant crown and its neighbors daily with floss, interdental brushes or a water flosser as your dentist or hygienist shows you. A removable implant-retained denture comes out for cleaning, and the implants and attachments underneath need cleaning too; a fixed full-arch prosthesis stays in place and is cleaned underneath with the tools your hygienist recommends.
• Professional recall. The interval between hygiene visits is set by your gum health, your history of gum disease, how well you clean and whether you smoke, not by a fixed calendar. Ask the office what interval it suggests for you and why.
• Periodic X-rays compared with a baseline. A radiograph taken when the crown is fitted is the reference; later X-rays, taken when the dentist's assessment calls for them rather than on a schedule, are compared with it to detect bone change early. See Do you need dental X-rays at every check-up?
• Gum checks. Probing around the implant for bleeding, pocket depth and pus, and looking for recession that exposes the implant collar.
• Bite and guard checks. Checking that the crown meets the opposing teeth evenly, that the screw is tight and that a night guard still fits.
• Prosthesis checks. Looking for chipping, wear and loose cement.

A written maintenance plan should list each of these items, who performs it, roughly how often for you, and what to watch for between visits: bleeding when cleaning, a bad taste, a crown that feels loose or high, swelling or pain around the implant. Any of these warrants a call rather than waiting for the next visit. Rapidly spreading facial or neck swelling, fever with swelling, bleeding that will not stop, a serious injury to the face or jaw, or difficulty swallowing or breathing is a medical emergency: call 911 or go to the nearest emergency department first.

Questions to ask about long-term care

1. Which published survival figures best match my situation, and what in my case moves me toward the better or worse end of the range?
2. Is the crown screw-retained or cemented, and how would it be removed for repair?
3. If the crown chips or the screw loosens, is that a repair or a replacement, and how is it charged? (The cost side is covered in Dental implant costs.)
4. What recall interval do you suggest for me, and what would change it?
5. Will you keep a baseline X-ray and a record of the implant system and components, and can I have a copy?
6. Do I need a night guard, and how often should it be checked?
7. Which signs between visits mean I should call?

A good written plan answers these before treatment starts; see What a written dental treatment plan should explain.

The next step

If you already have an implant, book a check-up and bring any previous X-rays and the record of your implant system so that comparison with a baseline is possible. If you are considering one, the consultation should cover maintenance and repair alongside placement; Dental implants in Santa Barbara: what should a complete consultation include? lists what to expect, and the services page describes what the practice offers. You can request an appointment online; a request is not a confirmed appointment, and the team will follow up.