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Table of Contents
Edentulous cases are the most complex surgical guide designs we do — and the ones where a guide matters most. When you're placing 4-6 implants in a completely toothless ridge, there's no anatomical reference point to eyeball. The guide is your only guarantee that the prosthetic platform matches the planned restoration.
A 3D-printed template that fits over the patient's teeth or tissue and directs drill placement during implant surgery. It transfers the digital treatment plan into precise physical drill positions.
What Makes Edentulous Guide Design Different?
In a dentate patient, the intraoral scan captures natural teeth — the guide registers on those teeth. In an edentulous patient, there are no teeth. The guide has to sit on soft tissue or bone, which introduces two challenges:
A 3D surface mesh file format used in dental CAD/CAM. Intraoral scanners produce STL files that capture tooth and gingival surfaces for surgical guide fitting.
- No rigid registration surface — tissue compresses under guide pressure
- No direct surface scan — you can't scan a bare ridge with an intraoral scanner
This is why edentulous cases require a dual-scan protocol or a radiographic template approach — both of which give us the surface morphology we need for guide body design.
Dual-Scan Protocol (Most Common)
| Step | What You Do | What We Receive |
|---|---|---|
| 1 | Patient wears existing denture during CBCT | CBCT with denture as reference |
| 2 | Scan the denture outside mouth (IOS or lab scan) | STL of the denture surface |
| 3 | Upload both files | CBCT + denture STL for merge |
The denture surface becomes the proxy for the tissue surface. We merge the CBCT bone data with the denture scan to create a complete anatomical model.
A 3D imaging technique that captures the jaw, teeth, and bone structure in a single rotational scan. It produces DICOM files used for implant planning, nerve mapping, and surgical guide design.
Alternative: Modified Radiographic Template
If the patient doesn't have an existing denture, you can fabricate a simple acrylic baseplate with radiopaque markers (barium sulfate or gutta percha). The patient wears this during the CBCT.
Tissue-Supported vs. Bone-Supported: Which Guide Type?
| Feature | Tissue-Supported | Bone-Supported |
|---|---|---|
| Seating | On gingival tissue | Directly on bone (requires flap) |
| Stability | Good with fixation pins | Excellent (rigid bone contact) |
| Surgery type | Flapless possible | Always requires full-thickness flap |
| Accuracy | ±1.0-1.5mm | ±0.5-1.0mm (best accuracy) |
| Use case | Standard All-on-4/6 | Complex anatomy, bone reduction needed |
Most All-on-4 cases use tissue-supported guides with fixation pin holes. When bone reduction is planned, bone-supported guides are necessary because the tissue surface changes after reduction.
A full-arch implant rehabilitation protocol where 4-6 implants support a complete fixed prosthesis. It allows immediate loading, meaning patients receive teeth on the same day as surgery.
Planning your first full-arch case? See our All-on-X workflow in action.
What Does a Full-Arch Guide Cost?
| Service | Price | Turnaround |
|---|---|---|
| All-on-X guide (tissue-supported) | From $150 | 3-5 days |
| All-on-X + bone reduction guide | $200 | 3-5 days |
| Zygomatic guide (complex) | $450 | 5-7 days |
| CBCT segmentation (if needed) | $20-50 | 1-2 days |
Every full-arch case includes: implant position planning for all fixtures, angulation optimization for prosthetic access, drilling protocol for sequential osteotomy, and fixation pin placement.
Immediate Loading Considerations
If you're planning immediate loading (provisional prosthesis at surgery), communicate this during the order:
- Implant positions must allow for multi-unit abutment access
- Angulation of posterior implants (typically 30-45° tilt in All-on-4) must clear the prosthetic space
- We can design the guide to include a stackable conversion template for the provisional
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Full-arch cases deserve full-arch planning. Upload your dual-scan files and receive a comprehensive surgical plan.
Start Your Full-Arch Case on SurgicalGuide.pro
FAQ
What files do I need for an edentulous case?
(with denture in place) + scan of the denture (STL). If no denture exists, we can work with a radiographic template or extract surface data from the CBCT.
How much does a full-arch surgical guide cost?
From $150 for a tissue-supported All-on-X guide. With bone reduction: $200. Zygomatic cases: $450. All include unlimited revisions.
Can the guide be used for flapless surgery?
Yes, tissue-supported guides are designed for flapless protocols. However, the ridge must have adequate keratinized tissue and bone width for flapless placement.
How accurate are tissue-supported guides on edentulous ridges?
Mean deviation is ±1.0-1.5mm at the platform level. Bone-supported guides achieve ±0.5-1.0mm. For most All-on-4/6 protocols, tissue-supported accuracy is clinically sufficient.
Can I order a guide for immediate loading?
Yes. Specify immediate loading during your order. We'll optimize implant angles for multi-unit abutment access and prosthetic clearance.
What if the patient doesn't have an existing denture?
Fabricate a simple acrylic baseplate with radiopaque markers, or we can segment the tissue surface from the CBCT data (segmentation from $20).
The process of separating bone, teeth, nerves, and sinuses in a CBCT scan into individual 3D structures. It enables precise anatomical visualization for treatment planning.
Do you include bone reduction guides?
Yes. All-on-X + bone reduction bundle is $200. The bone reduction guide ensures uniform alveoloplasty before the implant guide is seated.
Can I combine this with a stackable conversion guide?
Yes. We can design a stackable system where the implant guide converts to a positioning template for the immediate provisional. Discuss this during the planning phase.
How does the dual-scan protocol work exactly?
Patient wears denture during CBCT → scan denture separately with IOS or lab scanner → upload both files. We merge them digitally for accurate tissue surface mapping.
Is the turnaround longer for edentulous cases?
Slightly. Standard is 3-5 business days (vs. 2-3 for simple cases). Express 24-hour is available for +$30.
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