Key Takeaways

  • Concept: Full arch (10-14 teeth) supported by just 4 implants. Same-day provisional teeth.
  • Success rate: 98% at 10 years. Among the most proven implant protocols in dentistry.
  • No bone grafting: Angled posterior implants bypass areas of bone loss. 90% of patients qualify without grafting.
  • Timeline: Implants + provisional teeth on day 1. Final prosthesis at 4-6 months.
  • Cost: US: $15,000-$30,000/arch. Wholecares: $5,000-$8,000/arch all-inclusive.

The All-on-4 concept was developed by Dr. Paulo Maló in Lisbon in the 1990s and has since become the gold standard for full-arch implant rehabilitation. The protocol has over 25 years of published clinical evidence and millions of patients treated worldwide.

The genius of the system lies in its biomechanical design: by tilting the posterior implants at a 30-45° angle, the surgeon engages the dense cortical bone of the anterior jaw - providing sufficient anchorage for immediate loading (attaching teeth the same day) while avoiding the resorbed posterior bone that would otherwise require expensive, time-consuming bone grafting.

Who Is a Candidate?

The Procedure: Day by Day

Pre-Operative Planning

A 3D CBCT (cone beam computed tomography) scan maps the jawbone anatomy in precise detail. Using digital planning software, the surgeon virtually places the four implants in their optimal positions - determining angles, depths, and prosthesis design before the patient enters the operating room.

Surgery Day

  1. Anesthesia: IV sedation or general anesthesia. The patient is comfortable and unaware.
  2. Extractions: Remaining failing teeth are removed.
  3. Implant placement: Four titanium implants are placed per arch - two vertical anteriors, two angled posteriors.
  4. Impression and fabrication: An impression is taken. The dental laboratory fabricates a provisional fixed bridge (PMMA acrylic) - often within hours, sometimes using pre-fabricated templates from the digital plan.
  5. Provisional bridge attachment: The provisional teeth are screwed onto the implants. The patient leaves with a full, fixed set of teeth.

Total surgery time: 2-3 hours per arch.

Healing Period (4-6 Months)

The provisional bridge remains in place while the implants undergo osseointegration - the biological process by which bone grows directly onto the titanium implant surface, creating a permanent bond. During this period, the patient can eat, speak, and smile with the provisional teeth - though a soft-food diet is recommended for the first 2-3 weeks.

Final Prosthesis

After osseointegration is confirmed (via X-ray and torque testing), the provisional bridge is replaced with the definitive prosthesis - typically a full-contour zirconia bridge or a porcelain-fused-to-metal framework. This final prosthesis is designed for maximum aesthetics and durability, with a lifespan of 10-15+ years.

All-on-4 vs. Traditional Implants vs. Dentures

At Wholecares partner dental centers, All-on-4 is performed by prosthodontists and implantologists using Nobel Biocare and Straumann implant systems - the same premium brands used globally. All-inclusive packages cover CBCT scan, surgery, provisional bridge, all follow-up appointments, and the final zirconia prosthesis.