When a dentist recommends full-arch implant treatment, two options come up most often: All-on-4 and All-on-6. Both replace an entire arch of missing teeth with a fixed bridge supported by a small number of implants. Both are completed across two visits. And both deliver a result that looks, functions, and feels far closer to natural teeth than dentures.
The difference between them is not as simple as “six is better than four.” The right option depends on your bone condition, bite force, and what the CT scan shows. This article explains how each approach works, which clinical situations suit each one, and what full mouth dental implants in Vietnam cost at Delia International Dental Clinic.
What All-on-4 and All-on-6 actually are
Both treatments follow the same core principle: instead of placing one implant per missing tooth, a small number of strategically placed implants anchor a full-arch fixed bridge. This makes full-arch rehabilitation accessible to patients who have experienced significant bone loss and cannot support 10 to 14 individual implants without extensive grafting.
All-on-4 uses four implants per arch. Two are placed vertically at the front of the jaw, and two are angled at approximately 30 to 45 degrees toward the rear. The angled placement is the key: by tilting the posterior implants, the surgeon maximises contact with the denser bone at the front of the jaw, often avoiding the need for bone grafting entirely even when significant bone loss has already occurred.
All-on-6 uses the same general approach but adds two additional implants, giving six anchor points per arch. The extra implants distribute load more evenly across a wider span of bone, which matters most for patients with higher bite forces, bruxism, or larger jaw dimensions that a four-implant configuration may not support as effectively over time.
How All-on-4 and All-on-6 compare
| Feature | All-on-4 | All-on-6 |
| Implants per arch | 4 | 6 |
| Bone grafting needed | Rarely | Sometimes |
| Bone density requirement | Moderate to good | Good |
| Load distribution | Good | Better, wider span |
| Bridge teeth supported | 10–12 | 12–14 |
| Best for | Most full-arch cases | Bruxism, wider arches, denser bone |
| Delia Dental Clinic (Osstem, per arch) | from $6,300 | from $8,300 |
| Delia Dental Clinic (Straumann, per arch) | from $11,500 | from $13,000 |
Who is a better candidate for All-on-4
1. Patients with moderate bone loss who want to avoid grafting
The angled posterior implants in All-on-4 are specifically designed to work around reduced bone volume. In many cases, patients who would otherwise need a sinus lift or bone graft before implants can be placed are able to proceed directly to All-on-4 without that additional stage. This shortens the overall timeline and reduces cost and surgical complexity.
2. Patients prioritising the most cost-efficient fixed result
All-on-4 dental implants cost in Vietnam less than All-on-6 because fewer implants and less surgical time are involved. For patients with suitable bone who do not have significantly elevated bite forces, All-on-4 delivers a stable, long-term fixed result without the additional expense of two extra fixtures per arch.
3. Patients with standard arch dimensions and good anterior bone density
All-on-4 performs best when the front portion of the jaw has reasonable bone density to anchor the two axial implants securely. Patients with a standard arch width and no history of heavy grinding tend to distribute bite forces in a way that four implants handle comfortably across the bridge span.
Who is a better candidate for All-on-6
1. Patients with more significant bone loss or lower density
When the jawbone has experienced more extensive resorption, six implants spread the load across a wider area, reducing the pressure on each individual fixture. This matters for long-term stability, particularly in the upper jaw, where bone tends to be less dense than the lower.
2. Patients with wider arches or longer bridge spans
All-on-6 dental implants in Vietnam are recommended for patients whose arch dimensions require a longer bridge than four implants can reliably support. The additional anchor points reduce the cantilever effect at the ends of the bridge, which is where stress concentrates most under repeated biting force.
3. Patients with bruxism or heavy bite forces
Grinding and clenching place significantly higher loads on implants than normal chewing. For patients with a confirmed history of bruxism, the two extra implants in an All-on-6 configuration provide meaningful redundancy. The force is distributed across more fixtures, reducing the risk of mechanical failure in the bridge or loosening of individual implants over years of use.
All-on-4 and All-on-6 dental implants cost in Vietnam
Pricing varies by implant brand, since the same surgical protocol with a Swiss Straumann fixture costs more than with a Korean Osstem fixture, reflecting the difference in manufacturing, clinical data, and warranty terms.
| Treatment | Osstem (Korean) | Straumann SLA (Swiss) | Straumann SLActive (Swiss) |
| All-on-4 per arch | from $6,300 | from $11,500 | from $12,700 |
| All-on-4 both arches | from $12,600 | from $23,000 | from $25,400 |
| All-on-5 per arch | from $7,340 | from $13,840 | from $15,340 |
| All-on-5 both arches | from $14,680 | from $27,680 | from $30,680 |
| All-on-6 per arch | from $8,380 | from $16,180 | from $17,980 |
| All-on-6 both arches | from $16,760 | from $32,360 | from $35,960 |
For comparison, the same All-on-4 procedure with comparable implants typically costs:
| Country | All-on-4 per arch (approx.) |
| Australia | AUD 35,000–55,000 |
| United Kingdom | £12,000–25,000 |
| United States | $20,000–35,000 |
| Delia Dental Clinic (Osstem) | from $6,300 |
| Delia Dental Clinic (Straumann) | from $11,500 |
The implant itself is the same product regardless of where it is placed. A Straumann fixture placed at Delia in Ho Chi Minh City is manufactured in Switzerland to the same specification as one placed in Sydney or London. The price difference reflects operating costs, not material quality.
Treatment timeline for both options
Both All-on-4 and All-on-6 follow the same two-visit structure. The number of implants does not significantly change the timeline.
Visit 1 (5–7 days in Vietnam):
- Day 1: CT scan, clinical assessment, final treatment plan confirmed
- Day 2–3: Any remaining extractions if needed
- Day 3–4: Implant surgery. A fixed full-arch temporary prosthesis is delivered within 24 to 48 hours, so patients leave Vietnam with functional teeth before flying home.
- Day 5–7: Post-surgical review, discharge with implant passport and care instructions
Healing period (3–6 months at home):
- Osseointegration occurs at home; no clinical visits to Vietnam required
- Delia team monitors progress remotely via WhatsApp
- A local dentist can review healing using the treatment records Delia provides
Visit 2 (4–5 days in Vietnam):
- CT scan confirms osseointegration
- Final zirconia bridge fabricated and fitted
- Written warranty issued
Watch the video below to see what an implant treatment at Delia Dental Clinic looks like:
How Delia determines which option suits your case
The choice between All-on-4 and All-on-6 cannot be made from a description alone. The decision comes down to what a CT scan shows about bone density, bone volume, and arch dimensions, which are factors that look different in every patient regardless of how similar their situations might seem from the outside.
At Delia Dental Clinic, a CBCT scan is reviewed before any treatment plan is confirmed. The implantologist assesses which configuration the available bone can support reliably over the long term, rather than defaulting to one option for all cases. A written treatment plan with fixed pricing is then sent before the patient books flights, so there are no surprises on arrival.
If you are trying to figure out whether your case is better suited to All-on-4 or All-on-6, sending a recent panoramic X-ray is the most practical starting point for a remote assessment.
Book a free consultation here.
Final thoughts
All-on-4 and All-on-6 are not two tiers of the same product where one is simply better than the other. They are different clinical configurations suited to different bone conditions and bite loads. For most patients with moderate bone loss and standard arch dimensions, All-on-4 delivers a stable, long-term fixed result at a lower cost. For patients with greater bone resorption, wider arches, or a history of grinding, All-on-6 provides the additional load distribution that makes the difference over time.
Both options are available at Delia International Dental Clinic in Ho Chi Minh City and Hanoi, at a fraction of what the same treatment costs in Australia, the UK, or the United States, and using the same internationally recognised implant brands.
