Implant sous-périosté
- A subperiosteal implant is a custom-made titanium framework that rests on top of the jawbone, under the gum tissue. It does not go into the bone.
- It is designed for patients with severe bone loss who cannot have standard implants, All-on-4, or All-on-6, and for whom bone grafting is not suitable or desired.
- Unlike standard implants, subperiosteal implants do not rely on osseointegration. Stability comes from the framework sitting flush against the bone surface across a wide area.
- Every framework is designed individually from a 3D CBCT scan using CAD/CAM technology, then precision-milled in medical-grade titanium.
- Subperiosteal implants are a specialist option with a smaller evidence base than standard implants. They are indicated in specific clinical situations, not as a routine first choice.
- At DentAkademi, subperiosteal implants are considered after other approaches have been ruled out. A thorough assessment determines whether this or another technique is the right route.
A subperiosteal implant sits on top of the jawbone, not inside it. For patients who've lost so much bone that there's nothing for a standard implant to anchor into, and where bone grafting isn't an option, this custom-fitted titanium framework can provide a fixed set of teeth when almost nothing else can.
The framework is designed from a 3D scan of your jaw, milled in medical-grade titanium to follow the exact contours of your bone, and placed under the gum tissue. Small posts emerge through the gums and serve as the anchors for the prosthetic bridge. There is no drilling into the bone. There is no waiting for bone to regenerate.
It is worth being straightforward about where subperiosteal implants sit in modern dentistry: they were widely used in the mid-20th century, fell out of favour as standard implants improved, and have seen renewed interest with digital planning and CAD/CAM fabrication. For upper jaw severe bone loss, zygomatic implants are often the preferred approach today. Subperiosteal implants tend to be most relevant for the lower jaw when other options have been ruled out. Your assessment will determine which applies to you.
Qu'est-ce qu'un implant sous-périosté ?
Standard dental implants act as artificial tooth roots, placed directly into the jawbone. They require enough bone height and width to grip the implant securely. When bone loss is too severe, there's simply nothing for the implant to hold onto.
A subperiosteal implant takes a different approach entirely. Instead of going into the bone, the custom titanium framework rests on the bone's surface, under the periosteum, the thin tissue layer that covers the bone. The framework is shaped to mirror the patient's unique bone contours exactly, which distributes the load across a broad surface area rather than concentrating it at a single point.
Standard implants rely on the bone growing around the titanium post over 3 to 6 months. Subperiosteal implants do not. Stability comes from the precise fit of the framework against the bone surface and the soft tissue seal around the posts. This means the timeline to fixed teeth can be significantly shorter, though the long-term maintenance requirements are different.
How Does It Differ from Other Implant Options?
| Caractéristique | Subperiosteal | Standard / Endosteal | Prix des implants zygomatiques en Turquie |
|---|---|---|---|
| Where it anchors | On top of jawbone, under gum | Inside the jawbone | Inside the cheekbone |
| Exigence osseuse | ✅ Minimal jawbone needed | ❌ Adequate bone required | ✅ Jawbone not required |
| Bone grafting needed? | ✅ No | ❌ Often yes | ✅ No |
| Osseointegration required? | ✅ No | ❌ Yes (3–6 months) | ❌ Yes (3–6 months) |
| Mâchoire concernée | Upper and lower | Upper and lower | Mâchoire supérieure uniquement |
| Fabrication | Fully custom CAD/CAM | Standardised sizes | Standardised sizes, angled |
| Timeline to fixed teeth | Weeks | 6–12 mois | Same day (usually) |
| Base de données à long terme | Growing, but limited | Extensive (30+ years) | Strong (12+ year data) |
Is This the Right Treatment for You?
Subperiosteal implants are a specialist option, not a first-line treatment. They are considered when other approaches have been ruled out — typically in patients whose jawbone has diminished through bone resorption to the point where conventional implant techniques are no longer viable.
✅ You may be a candidate if:
- Severe bone loss in the upper or lower jaw rules out standard implants
- Zygomatic implants are not suitable (e.g., lower jaw cases, or upper jaw where cheekbone anatomy is not appropriate)
- Bone grafting is medically unsuitable or you are unwilling to undergo it
- You are in good general health with stable systemic conditions
- You are a non-smoker, or willing to stop during healing
- You are committed to rigorous long-term oral hygiene and monitoring
❌ This may not be appropriate if:
- Standard implants, All-on-4, or zygomatic implants are viable for your case
- Active untreated gum disease or infection around the proposed site
- Uncontrolled diabetes or cardiovascular disease
- Active radiotherapy to the jaw or head area
- Poor oral hygiene compliance (framework health depends on consistent care)
⚠️ Needs careful assessment before proceeding:
- Smoker: raises risk of gum recession around the posts and framework infection
- Well-controlled diabetes: may be suitable with HbA1c review
- Osteoporosis medication (bisphosphonates): requires specialist evaluation
- Sinus proximity in the upper jaw: may influence design and placement
Whether subperiosteal implants are right for your case, or whether another approach is more appropriate, is confirmed from your 3D scan and a thorough clinical review. We will always recommend the simpler or better-evidenced option if it's available to you.
Been told you have no options left? Upload your X-ray or scan. We'll review your bone anatomy and tell you what's actually possible.
Upload Your Scan: Free Assessment in 48 HoursAssoc. Prof. Ahmet Ferhat Mısır, Oral & Maxillofacial Surgeon
"Subperiosteal implants occupy a specific and narrow indication in modern implant dentistry. I want to be direct about that: they are not a general alternative to standard implants, and they are not always the best answer for severe bone loss.
For most patients presenting with severe upper jaw bone loss who want to avoid bone grafting, zygomatic implants are my first discussion. The long-term data on zygomatic implants is stronger, the technique is well-established, and in experienced hands the outcomes are predictable.
Where subperiosteal implants become relevant is in the lower jaw, where zygomatic implants are not an option, and when the bone loss is too severe for All-on-4 or standard approaches. In those cases, a well-designed custom framework can provide a fixed result that the patient would otherwise not be able to achieve.
The critical factors are patient selection and fabrication quality. A subperiosteal framework that doesn't fit precisely will cause problems. We use full 3D planning and CAD/CAM fabrication for every case, and we discuss the long-term monitoring requirements with every patient before we proceed."
Assoc. Prof. Ahmet Ferhat Mısır, Oral & Maxillofacial Surgeon, DentAkademi
La Procédure : Étape par Étape
Subperiosteal implant treatment follows a structured sequence. Because the framework is custom-fabricated, there is a design and manufacturing phase between the scan and surgery.
3D CBCT Scan and Surgical Assessment
Treatment begins with a cone beam CT scan, which captures the precise contours of your jawbone in three dimensions. The scan also shows the proximity of nerves, the sinus cavities, and the overall bone structure. This data forms the foundation for the framework design. We also review your full medical and dental history at this stage to confirm suitability.
Framework Design and Fabrication
Using the scan data, the titanium framework is designed digitally using CAD software. Engineers map the exact surface of your jawbone and design a framework that follows it precisely, positioning the posts at optimal points for prosthetic attachment. The framework is then precision-milled in medical-grade titanium. This fabrication phase typically takes 1 to 2 weeks.
Processus de mise en place chirurgicale
The gum tissue is carefully reflected to expose the bone surface. The custom framework is positioned flush against the bone and secured. The gum tissue is then closed around the framework, with the attachment posts emerging through the gum surface. The procedure is performed under local anaesthesia; IV sedation or general anaesthesia is available for patients who prefer it. Surgery typically takes 1 to 2 hours per jaw.
Initial Healing and Temporary Prosthesis
Once the gum tissue has healed around the posts, a temporary prosthesis can be attached. The healing phase for the gum tissue is shorter than the osseointegration waiting period for standard implants, which is one of the advantages of this approach. A soft diet is maintained during this period to avoid placing stress on the framework before it is fully stable.
Permanent Prosthesis Fitting
Once healing is confirmed and the framework is stable, digital scans are taken and the permanent fixed bridge is fabricated. The bridge is custom-made to match your bite, shade, and facial structure. It is attached to the posts and adjusted until the fit and bite are correct. Full written documentation is provided for your local dentist.
Your Istanbul Treatment Journey
Because the framework requires a fabrication phase, subperiosteal implant treatment involves more planning time than standard implant procedures. Most patients manage this in two visits, with the fabrication happening between visits.
First Visit (approx. 3–4 days)
| Day | Ce qui se passe |
|---|---|
| Day 1 | Arrival in Istanbul, VIP airport transfer to hotel |
| Day 2 | CBCT scan + full consultation + written treatment plan + medical review |
| Day 3 | Scan data confirmed, framework design approved and sent to fabrication |
| Day 4 | Return home, fabrication begins begins (1–2 weeks) |
Framework Fabrication: 1–2 weeks (at home)
The titanium framework is precision-milled from your scan data. You are kept informed of progress by your coordinator. No return to Istanbul is needed during this phase.
Second Visit (approx. 5–7 days, surgery + initial recovery)
| Day | Ce qui se passe |
|---|---|
| Day 1 | Arrival + pre-op review + framework fit check |
| Day 2 | Surgical placement of framework under local anaesthesia or sedation |
| Day 3 | Rest and recovery |
| Day 4 | Post-op review + gum healing assessment |
| Day 5–6 | Temporary prosthesis fitted (if gum healing allows) + aftercare instructions |
| Day 7 | Return flight home |
Third Visit (approx. 3–4 days (permanent bridge)
| Day | Ce qui se passe |
|---|---|
| Day 1 | Arrival + stability check + digital scanning |
| Day 2 | Permanent bridge fabrication + shade and bite confirmation |
| Day 3 | Bridge fitted + adjustments + final review |
| Day 4 | Return flight home |
Ongoing monitoring is more important with subperiosteal implants than with standard implants. The gum tissue around the posts needs to be checked regularly for signs of recession or infection. We provide full documentation for your local dentist and remain reachable by WhatsApp throughout your aftercare.
On Long-Term Maintenance
"The most important thing I want patients to understand before choosing a subperiosteal implant is that the aftercare commitment is significant. The posts that emerge through the gum tissue create a permanent access point to the underlying framework. If the gum tissue around those posts is not kept clean and healthy, bacteria can track down to the framework itself.
We see the best long-term outcomes in patients who are disciplined about their oral hygiene routine and attend professional cleaning appointments every 4 to 6 months. Patients who are not prepared for that level of commitment are not ideal candidates for this approach.
When the selection is right and the patient takes the maintenance seriously, the outcomes are good and the framework can provide a functional result for many years. The conversation about aftercare happens before surgery, not after."
Assoc. Prof. Ahmet Ferhat Mısır, Oral & Maxillofacial Surgeon, DentAkademi
Risques et Complications
Subperiosteal implants carry a specific risk profile that differs from standard implants. Understanding this before proceeding is part of making an informed decision.
Gum recession around the posts
The posts that emerge through the gum tissue can, over time, cause the surrounding gum to recede. This can expose the post-gum junction, affect aesthetics, and create a pathway for bacteria to reach the framework. Meticulous daily oral hygiene and regular professional cleaning are the primary defence against this.
Framework infection
If bacteria reach the framework beneath the gum, infection can develop around the metal structure. This is one of the more serious complications associated with subperiosteal implants and may require framework removal in severe cases. Smoking significantly raises this risk.
Framework movement or fit changes
If the bone continues to resorb after placement, the framework's fit against the bone surface may change over time. This is not common with well-designed CAD/CAM frameworks, but it is a possibility that should be discussed and monitored through regular check-ups.
Soft tissue complications
Swelling, discomfort, and temporary difficulty chewing are expected in the initial recovery period. Most patients manage this with standard prescription medication. More significant soft tissue problems, such as slow healing or tissue inflammation around the posts, may require additional treatment.
Smoking impairs gum tissue healing and raises the risk of infection around the posts significantly. We strongly recommend stopping smoking before surgery and maintaining this throughout the healing period. Patients who are unwilling to stop should be aware that this changes the risk profile of the procedure substantially.
Aftercare: What Long-Term Maintenance Looks Like
Subperiosteal implants require a higher level of ongoing maintenance than standard implants or zygomatic implants. The fixed bridge is cleaned in place: brush twice daily with a soft toothbrush, paying particular attention to the gum line around each post where it emerges through the tissue. An interdental brush or water flosser is essential for cleaning beneath the bridge and around the post openings.
Professional hygiene appointments every 4 to 6 months are not optional with this treatment. Your dentist or hygienist needs to monitor the tissue around the posts, clean areas that are difficult to reach at home, and identify any early signs of recession or infection. We provide full clinical documentation for your local dental team to support this ongoing monitoring.
DentAkademi by the Numbers
Want to know if a subperiosteal implant is the right route for your case, or whether another approach may work better? Send us your scan.
Request a Surgical AssessmentConsidérations pratiques pour les patients internationaux
How many visits to Istanbul does this treatment require?
Most patients need three visits. The first (3–4 days) covers the scan, consultation, and framework design approval. The second (5–7 days) covers surgery and initial recovery. The third (3–4 days) covers permanent bridge fitting. The framework fabrication phase (1–2 weeks) happens at home between the first and second visits.
Why does this treatment require more visits than All-on-4?
The custom fabrication of the titanium framework takes 1 to 2 weeks and cannot be rushed. Unlike All-on-4, where the implants are placed and a pre-prepared bridge can be attached in the same visit, subperiosteal treatment requires the framework to be manufactured before surgery. This adds a planning visit and a fabrication phase.
What if gum problems develop after I return home?
Any sign of gum recession, swelling, persistent discomfort around the posts, or unusual discharge should be reported to us immediately. We provide detailed written guidance on what to watch for after surgery. Our coordinator is reachable by WhatsApp, and we will direct you to appropriate local care if needed. We remain clinically responsible for complications arising from our work.
How is the framework designed if I can't return for multiple consultations?
The critical data is captured in a single CBCT scan during the first visit. Everything needed to design and fabricate the framework comes from that scan and your clinical records. You don't need to be present during fabrication. Most international patients find the three-visit structure manageable, as visits two and three are the surgical and completion phases.
Can I combine this with treatment on the other jaw?
Depending on your clinical situation, it may be possible to treat both jaws during the same surgical visit. Whether this is appropriate is confirmed during the treatment planning consultation. For patients who need a different approach in the opposing jaw, such as All-on-4 or All-on-6, these can often be coordinated into the same timeline.
Foire aux questions
Résumé
Subperiosteal implants are a specialist solution for patients at the most challenging end of the bone loss spectrum. They rest on the bone rather than inside it, require no osseointegration, and can provide fixed teeth without bone grafting in cases where almost no other option is viable.
They are not the first choice for severe bone loss. For the upper jaw, zygomatic implants typically offer a better-evidenced path. For the lower jaw, where zygomatic implants are not applicable, subperiosteal implants may be the most practical fixed option available.
The commitment required after treatment is significant. The framework depends on healthy gum tissue around the posts for long-term stability, and that requires consistent daily hygiene and regular professional monitoring. We will be clear about this before any plan is confirmed. If you are not prepared for that level of aftercare, we will tell you, and we will discuss what alternatives might suit you better.
Get an Honest Assessment of Your Options
Send us your existing scan or X-ray. Our oral and maxillofacial surgeon will review your bone anatomy and tell you whether a subperiosteal implant is indicated, or whether a simpler approach is viable. No commitment required.
Request Your Surgical Assessment
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