Snap-on dentures on implants: how do they hold, and how many implants do they need?

In short

A snap-on denture is a removable full denture that clips onto small attachments on implants. It moves far less than a conventional denture but is still taken out for cleaning. Consensus statements name two implants as the minimum standard for a toothless lower jaw; the upper jaw usually needs more. The plastic inserts wear and are replaced.

Medically reviewed by: Dt. Muhammed Raşid KızılarslanoğluUpdated:

What is a snap-on denture on implants?

A snap-on denture is a removable full denture that clips onto small attachments fixed to implants in the jawbone. From the outside it looks much like a conventional full denture; the difference is on its fitting surface, where the matching parts of the attachments are built in. Dentists call it an implant overdenture or implant-retained denture.

Cleveland Clinic describes these dentures as teeth that snap onto implants and are taken out by the patient at night for cleaning, and distinguishes them from fixed implant dentures, which do not snap in and out and can only be removed by a dentist. Leeds Teaching Hospitals NHS Trust compares the attachments to press studs on clothing. For the general comparison between dentures, dentures on implants and fixed teeth, see our guide dentures or implants; this guide looks at the snap-on denture in detail.

How many implants does it need in the lower jaw?

In the lower jaw, two implants are usually enough. The McGill Consensus Statement of 2002 and the York Consensus Statement of 2009 describe a removable denture on two implants as the minimum standard of care that should be offered as the first choice to people with no lower teeth. The consensus statements and the other factors that affect the number are explained in our guide how many implants do you need?.

More implants do not automatically mean a better result. The systematic review by Lee and colleagues (2012) compared lower dentures on two and on four implants: implant survival was 95 to 100 percent in both groups, and there was no meaningful difference in satisfaction. Most studies also found no difference in maintenance. The authors conclude that implants in the lower jaw survive very well regardless of their number.

Why does the upper jaw usually need more implants?

There is no equally clear consensus statement for the upper jaw, and the data generally point to more implants. Upper jawbone is softer, and the sinus limits the space at the back. The systematic review by Raghoebar and colleagues (2014) in the European Journal of Oral Implantology calculated the following annual rates for snap-on dentures in the upper jaw:

Upper-jaw design Implant survival Denture survival
6 implants joined by a bar 98.1 percent 99.5 percent
4 implants joined by a bar 97.0 percent 96.9 percent
4 unconnected implants with single attachments 88.9 percent 98.8 percent

The authors conclude that four implants joined by a bar perform well in the upper jaw, while four unconnected implants carry a higher risk of implant loss. If there is too little bone at the back of the upper jaw, a sinus lift may be needed first.

What kinds of attachment are there?

Several kinds of attachment are used for snap-on dentures. We give only the generic names here, not product names:

  • Ball attachments: each implant carries a ball-shaped head, and a socket in the denture clips onto it.
  • Stud attachments with a low head: a short head is screwed onto the implant, and a replaceable plastic insert in the denture grips it.
  • Bar attachments: the implants are joined in the mouth by a metal bar, and clips in the denture grip the bar.
  • Magnets and telescopic attachments: used less often.

The Cochrane review by Payne and colleagues (2018) reports that ball attachments in the lower jaw needed repair about three times as often as bar attachments, with no clear difference in the replacement of parts, and that magnets cost more to maintain over five years than ball attachments. Because the certainty of the evidence is very low, the authors see no sufficient proof that one attachment is better than another. The choice depends on the number and position of the implants, the space inside the denture and your dexterity. Advice on magnetic attachments and MRI scans is in our guide dental implants, MRI and airport security.

How does it differ from a conventional denture and from fixed teeth?

Feature Conventional full denture Snap-on denture Fixed teeth on implants
What holds it Gums and palate, often adhesive Attachments on implants Screwed or cemented onto implants
Usual number of implants, lower jaw None Usually 2 Usually 4 or more
Who removes it You You, daily Only the dentist
Typical maintenance Relining Replacing inserts, relining Check-ups, screw service if needed
Cleaning Outside the mouth Outside the mouth; implants brushed separately In the mouth, including under the teeth

The review by Webb and colleagues (2017) in Dental Update states that snap-on dentures need maintenance roughly four to ten times as often as fixed restorations, so regular check-ups matter particularly with this type of denture. Which fixed option suits a toothless jaw is described on our full-arch implants page.

Why do the attachments wear, and who replaces them at home?

The plastic inserts and clips in the denture wear with daily insertion and removal, and the hold then weakens. Leeds Teaching Hospitals NHS Trust points out that the denture or the attachments wear over time and need to be renewed. Webb and colleagues list loss of retention (30 percent) and relining of the denture base (19 percent) as the most common mechanical problems. There is no fixed schedule; the timing depends on the hold and on the condition of the parts at each check-up. According to Cleveland Clinic, the denture itself lasts seven to ten years on average, and a reline is usually needed every one to two years.

For patients travelling from abroad this is the central question: replacing a plastic insert is a small routine job, but the new part has to match the attachment system used. The General Dental Council (GDC) in the UK advises telling your own dentist about your plans in case of later complications, and the NHS treatment abroad checklist says you should be clear about how your aftercare will be coordinated. So before treatment, find out which attachment system will be used, whether your dentist at home can replace the inserts, and what information they need to do so. More care advice is in our guide caring for teeth on implants.

What does this mean for treatment in Türkiye?

As with all implants, two trips are usually needed: the implants are placed on the first, and the denture is made and fitted on the second, after several months of healing. What happens on each trip is described in our guide how many days do I need to stay in Türkiye for dental implants?. When you leave, you receive copies of your treatment summary and X-rays and an implant card; the make and model of your implants are in your written treatment and cost plan.

What to expect in the first weeks is in our guide getting used to new dentures. After you return home, you can reach us on WhatsApp and send photos of any problem with the denture (see aftercare and follow-up). Cleveland Clinic advises seeing a dentist if the denture feels loose, hurts or pinches the gums, clicks when you speak or is damaged.

How do we plan a snap-on denture at Rönesans?

We first use a cone-beam CT (CBCT) scan at our clinic to check whether there is enough bone for the implants and where they will sit under the denture. If there is not enough bone, we carry out bone grafting and sinus lifts at our clinic. During the healing months a temporary denture is fitted depending on your case.

For a preliminary assessment, you can send photos and any existing X-rays on WhatsApp to +90 532 363 49 54 or call +90 264 606 09 43. How many implants are planned in which jaw and which denture will be made is given to you in writing, with the costs, before treatment begins. Transfer from Istanbul and accommodation in Sapanca are included in the treatment price. More about the treatment is on our implant-supported dentures page.

Sources
  1. Thomason JM, Feine J, Exley C et al. Mandibular two implant-supported overdentures as the first choice standard of care for edentulous patients – the York Consensus Statement. British Dental Journal, 2009;207(4):185–186.
  2. Lee JY, Kim HY, Shin SW, Bryant SR. Number of implants for mandibular implant overdentures: a systematic review. Journal of Advanced Prosthodontics, 2012;4(4):204–209.
  3. Raghoebar GM, Meijer HJA, Slot W, Huddleston Slater JJR, Vissink A. A systematic review of implant-supported overdentures in the edentulous maxilla, compared to the mandible: How many implants? European Journal of Oral Implantology, 2014;7(Suppl 2):S191–S201 (University of Groningen record)
  4. Payne AGT, Alsabeeha NHM, Atieh MA, Esposito M, Ma S, Anas El-Wegoud M. Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws. Cochrane Database of Systematic Reviews, 2018.
  5. Webb L, Coleman A, Nixon P. Dental implants: what have we learnt from long-term follow-up? Dental Update, 2017;44(11):1023–1033.
  6. Implants With Dentures – Cleveland Clinic
  7. Dental Implants – Leeds Teaching Hospitals NHS Trust
  8. Going abroad for dental treatment – General Dental Council
  9. Treatment abroad checklist – NHS

Frequently asked questions

Can my existing denture be converted to snap onto implants?

Sometimes. If the denture is in good condition and the implants can be placed to suit it, the female parts of the attachments can be fitted into your existing denture. If it is worn or no longer fits well, a new denture is usually made. What is possible in your case is decided at the examination, looking at the denture and the implant plan together.

Is a single implant enough in the lower jaw?

This has been studied. The systematic review by Lee and colleagues (2012) found similar satisfaction with lower dentures on one or two implants; with one implant, fractures of the denture base tended to be more frequent in the first year, although the difference was not statistically significant. Consensus statements recommend two implants as the first choice. The number that suits you is set at the examination.

Do I still need denture adhesive with a snap-on denture?

Usually not. Cleveland Clinic says implant-retained dentures are held by the implants themselves, so denture adhesive is normally not needed. If the denture feels less secure than it used to, the attachments should be checked rather than the problem covered up with adhesive.

Can I eat everything with a snap-on denture?

Most people chew far more easily than with a conventional denture. The York Consensus Statement of 2009 reports that people with a lower denture on two implants are more satisfied with retention and stability and chew a range of foods more easily. Because the denture remains removable, ask at the fitting which foods still call for care.

Can I have an MRI scan with magnetic attachments?

Magnetic attachments need to be assessed separately before an MRI scan. Tell the radiology team and your dentist beforehand that you have magnets in your mouth; the decision rests with the doctor ordering the scan and the radiology department. Our guide to dental implants, MRI and airport security explains more.

Find out at an examination whether this treatment suits you

Send us photos or X-rays on WhatsApp for a preliminary assessment. Your final plan is made after an in-person examination.

Related pages

This page is general information. A personal assessment requires an examination by a dentist.