What is All-on-4 and how does it work?

All-on-4 is a concept for complete tooth replacement on just 4 implants per jaw. Two implants are placed straight at the front, two tilted at the back (up to 45°) — this often eliminates the need for bone grafting. A fixed bridge (12–14 teeth) is anchored on the 4 implants. The concept was developed by Prof. Paulo Malo (Lisbon) and has been clinically proven since the 1990s.

What is the difference between All-on-4 and All-on-6?

All-on-4 uses 4 implants per jaw, All-on-6 uses 6. All-on-6 offers more stability, better force distribution and is particularly recommended for the upper jaw (lower bone density). All-on-4 is more cost-effective and requires less bone volume.

What are the survival rates for All-on-4?

According to Malo et al. 2019 (10-year study): implant survival rate 94.8% (mandible) and 90.1% (maxilla). Prosthesis survival rate: 99.2% (mandible) and 98.0% (maxilla). These are solid long-term data — comparable to conventional implant restorations.

What does All-on-4 cost in Vienna?

All-on-4 typically costs €8,000–15,000 per jaw in Vienna (implants + abutments + bridge). All-on-6 is €12,000–20,000 per jaw. CBCT diagnostics (€150–350) and any bone grafting are additional. ÖGK does not cover costs. Financing plans are available at most practices.

All-on-4 and All-on-6 Vienna

Das Wichtigste in Kürze

All-on-4: complete tooth replacement on 4 implants — often without bone grafting.
10-year survival rate: 94.8% (mandible) and 90.1% (maxilla) per Malo et al. 2019.
All-on-6 offers more stability, particularly recommended for the upper jaw.
Costs Vienna: All-on-4 approx. €8,000–15,000 / jaw, All-on-6 approx. €12,000–20,000 / jaw.
Immediate loading possible: provisional denture on the day of surgery.
Not suitable for everyone: bone volume, systemic conditions and compliance are decisive.

All-on-4 and All-on-6 are concepts for complete tooth replacement on few implants — and one of the most heavily marketed offerings in implantology. But what is really behind them? This article explains the concept evidence-based: with long-term data, clear indications and an honest assessment of advantages and disadvantages — without advertising.

Long-Term Data: What the Research Shows

The most important long-term study comes from Malo et al. 2019 (10-year data, n=242 patients):

Mandible (All-on-4)

Implant survival rate94.8%

Prosthesis survival rate99.2%

Marginal bone loss (10 yr)Ø 2.3 mm

Maxilla (All-on-4)

Implant survival rate90.1%

Prosthesis survival rate98.0%

Marginal bone loss (10 yr)Ø 2.8 mm

Conclusion: All-on-4/6 Is Evidence-Based — But Not a Universal Solution

All-on-4 and All-on-6 are well-documented concepts with solid 10-year data. They are not marketing gimmicks — but also not a universal solution. The decision depends on bone volume, systemic conditions, bruxism status and compliance. A reputable dentist will explain transparently whether and which variant is suitable for you — and why. Request a CBCT-based plan and an itemised cost breakdown before you agree.

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Tags:All-on-4All-on-6VollversorgungZahnersatzWienImplantologieKosten

All-on-4 und All-on-6 Wien: Evidenzbasierter Überblick

Long-Term Data: What the Research Shows

Conclusion: All-on-4/6 Is Evidence-Based — But Not a Universal Solution

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