All-on-4 — Full-Arch Fixed Restorations with Just 4 Implants
A revolutionary clinical technique restoring a full arch of missing or failing teeth with just 4 strategically positioned implants. Reclaims 99% of chew force without complex bone grafting.
1. What is All-on-4, and Why Only 4 Implants?
All-on-4 is a full-arch restoration technique that replaces an entire arch of missing teeth using just 4 strategically placed implants: 2 straight implants in the front and 2 tilted implants at the back (angled at 30 to 45 degrees). This specialized angulation bypasses anatomical structures like the sinus cavity (upper jaw) and the alveolar nerve (lower jaw).
By utilizing this tilted layout, patients with moderate bone resorption can avoid traumatic and expensive bone grafts. A full-arch fixed prosthesis is securely screwed onto these 4 posts, offering stable chewing power and eliminating the discomfort and slippage of traditional removable dentures.
Key Benefits of All-on-4
- Avoids complex bone grafting & sinus lifts in most cases
- Screw-retained fixed bridge – no slipping or moving
- Restores natural smile aesthetics and supports saggy cheeks
- Immediate load temporary bridge fitted within 24 hours
- Easy maintenance with dental floss & water flossers
2. The Ultimate Deciding Factor: 3D CT/CBCT Diagnostic Scan
All-on-4 feasibility is strictly governed by your clinical jawbone volume and density. A 3D Cone Beam CT (CBCT) scan is the only diagnostic tool that allows our clinical board to evaluate:
- Bone volume and thickness at the 4 strategic implant sites.
- The exact boundary of the sinus cavities (upper jaw) to adjust rear angulation.
- The location of the inferior alveolar nerve (lower jaw) to avoid numbness.
- The level of resorption – in cases of extreme loss, alternative treatments like bone grafts, All-on-6, or Zygomatic Implants will be indicated.
DENTALNKT PROTOCOL
We enforce a strict 3D CBCT requirement for 100% of All-on-4 surgeries to design accurate virtual guides. We do not provide firm treatment quotes based on simple panoramic X-rays or photos to eliminate surprises or clinical failures.
3. Am I a Good Candidate for All-on-4?
Who is this suitable for?
- Complete tooth loss on one or both arches.
- Remaining teeth are severely loose from periodontitis and require extraction.
- Currently wearing unstable removable dentures that cause sore spots.
- Adequate bone volume at the 4 targeted implant sites.
Who needs close assessment?
- Extreme bone loss at all sites (requires bone grafting or Zygomatic implants).
- Uncontrolled diabetes, active osteoporosis, or recent head/neck radiation.
- Heavy smoking habits (must quit 2 weeks before and after surgery).
- Severe bruxism (requires a night guard to prevent prosthetic fracture).
4. All-on-4 Comparison Index
| Criteria | All-on-4 | All-on-6 | Single Implants | Removable Dentures |
|---|---|---|---|---|
| Implants per arch | 4 | 6 | 1 post per lost tooth (10-12) | None |
| Bone grafting requirement | Usually not required | Rarely required due to spacing | High if bone is resorbed | None |
| Ideal scenario | Average resorption, good bone at 4 sites | Slightly softer bone, wider arch | Single or multiple missing teeth | Tight budget, surgery avoiders |
| Fixation type | Fixed (Screw-retained) | Fixed (Screw-retained) | Fixed (Cement/Screw-retained) | Removable |
| Teeth in a day (Temporary) | Yes (subject to primary stability) | Yes (subject to primary stability) | No (requires osseointegration) | Yes |
* Clinical Note: The decision to place 4 or 6 implants is a clinical diagnosis based on bone density and load calculations, not a package preference. Avoid clinics pushing All-on-6 simply to increase invoice values.
5. Risks & Complications to Know Before Surgery
- Osseointegration rate is high (~98%) but not absolute – minor risks of implant rejection exist due to biology or infection.
- Post-operative swelling, mild pain, and minor bruising around the cheeks/chin are normal and resolve in 5-10 days.
- The immediate load temporary bridge is cosmetic and structural – strictly no hard chewing is allowed during healing.
- Immediate loading is not guaranteed – it is decided intra-operatively based on the insertion torque value.
- Peri-implantitis risk increases dramatically if oral hygiene is poor or annual check-ups are missed.
- Final restorations (ceramics/acrylics) experience mechanical wear and tear and require periodic maintenance.
6. Step-by-Step Treatment Timeline — 2 Trips Required
| Treatment Stage | Clinical Procedure | Recommended Stay |
|---|---|---|
| Trip 1 (Implant Placement) | Clinical exam, 3D CBCT scan, computer surgical planning, extraction of failing teeth, implant surgery, immediate placement of acrylic temporary bridge (if stable), suture removal & check-up. | 7 – 10 Days in Hanoi |
| Osseointegration Period | Implants biologically integrate with the jawbone while you are at home in Australia. Patient functions normally with temporary teeth (soft-diet focus). | 3 – 6 Months (in Australia) |
| Trip 2 (Final Restoration) | X-ray integration check, digital high-definition scans, structural framework try-in, custom porcelain teeth setup, final screw-retained bridge delivery, warranty cards handover. | 5 – 7 Days in Hanoi |
Flight Booking Tip: We recommend booking your return flights with a 2-day buffer window after the surgery date (Trip 1) and delivery date (Trip 2). This allows final clinical calibrations and check-ups before your flight.
7. Documentation Handed Over after Trip 1
- Implant Passport specifying brands, models, and batch/lot numbers for all 4 fixtures.
- Post-surgical X-ray film showing correct placement alignment.
- Home-care guide booklet and 24/7 direct patient coordinator hotline.
Documentation Handed Over after Trip 2
- Official Warranty Certificate for both implants and prosthesis structure.
- Lab certification for materials used in framework and porcelain teeth.
- Detailed electronic medical record using ADA standard procedure codes.
8. Post-Op Care Guidelines in Australia
- 1Eat soft, cut-up foods for the first 3-6 months. Avoid directly biting into hard food to prevent temporary bridge fractures.
- 2Quit smoking completely – nicotine constricts blood vessels, slows healing, and is the leading cause of early implant failures.
- 3Maintain strict hygiene with soft-bristled brushes, water flossers on low pressure, and warm saline rinses after meals.
- 4In case of concerns (progressive pain, fever, or loose temporary bridge), contact your DentalNTK coordinator for a remote consultation.
9. Comprehensive All-on-4 Fee Schedule
| Treatment Package | Price (USD) | Price (AUD) |
|---|---|---|
| All-on-4 Package — 4 HIOSSEN (USA) implants + temporary + final ceramic bridge | $5,210 USD | $7,425 AUD |
| All-on-4 Package — 4 Nobel Biocare / Straumann implants + temporary + final ceramic bridge | $9,514 USD | $13,556 AUD |
| Prosthetic Upgrade — high-end milled Titanium / Zirconia framework | $1,370 USD | $1,950 AUD |
| Supplemental Bone Grafting (if bone volume is thin, per unit) | $274 USD | $390 AUD |
| Zygomatic Implant placement (indicated for extreme bone loss, per fixture) | $3,425 USD | $4,880 AUD |
* Package rates include: Clinical consultations, 3D CBCT diagnostics, surgery fees, immediate temporary bridge, final permanent bridge, and all post-op follow-ups. Currency converted at the fixed rates: 1 AUD = 18,441 VND, 1 USD = 26,280 VND.
10. Who Will Perform Your Surgery?
All-on-4 is a highly complex surgical procedure requiring specialized qualifications. At DentalNKT, your full-arch surgery is directly performed by Dr. Nguyen Huy Hoang — our Clinical Director of Implantology.
- Graduated from Hanoi Medical University in 2011.
- Advanced training at Cologne University (Germany) specializing in Implantology.
- Over 15,000+ successful implant placements, including complex full-arch reconstructions.
- Operating theater fully certified for absolute sterile control by the Ministry of Health.
Flexible Payment Structure
We support multiple payment methods including cash, bank transfers, and international credit cards (VISA/Mastercard) in either VND or AUD. Fees are split across your 2 treatment trips (Stage 1: 70% paid during Trip 1 surgery; Stage 2: 30% paid during Trip 2 final bridge delivery).
11. Verifiable Warranty Policy
Covers structural integrity. Lifetime or 10-year free replacement for post damage.
Covers cracks or fractures of the internal titanium or zirconia bar support.
Covers debonding, chipping, or fracturing of porcelain crown veneers.
Clinical backup promise: In the rare event of a clinical complication or failure originating from our surgical execution after your return to Australia, DentalNKT will resolve the issue free of charge and provide up to 100% reimbursement for your return flights back to Hanoi.
12. All-on-4 Frequently Asked Questions
Restore Your Smile – Save Up to 70% in Hanoi
Submit your latest dental X-ray or 3D CBCT scan. Our Clinical Implant Board will review your diagnostic data and deliver a written treatment plan and AUD cost quotation within 24 to 48 hours.