1. What Is the All-on-4 Concept?
The All-on-4 treatment concept uses four strategically placed implants—two upright in the front and two angled posteriorly—to support a full-arch prosthesis, often placed and loaded on the same day (1)(2). This approach reduces surgical complexity, avoids bone grafts, and makes implant treatment more accessible and cost-effective (2).
2. Quick Recovery: Immediate Loading
A landmark 10-year study on edentulous mandibles found implant-level survival at 98.1% and prosthesis survival at 99.2%, demonstrating long-term stability and success (3). A systematic review similarly found 99.0% implant survival and 99.9% prosthetic survival at 36 months, with marginal bone loss averaging only 1.3 mm (4).
3. Extended Longevity: 3 to 17 Years
A large Japanese study following patients for 3–17 years reported implant-level survival of 97.4% in the maxilla and 98.9% in the mandible. Patient-level survival was 94.4% and 96.7%, respectively (5). These findings show consistent, reliable results even over long-term follow-ups.
4. Early Outcomes and Bone Stability
A multicenter prospective study followed patients for 18 months after immediate All-on-4 loading in fresh extraction sites. Results showed zero implant failures, stable prostheses, and marginal bone loss of just 0.7 mm at 18 months (6). Both axial and tilted implants performed equally well.
5. Evidence at a Glance
Study / ReviewFollow-upKey FindingsJADA longitudinal study (3)Up to 10 years98.1% implant survival, 99.2% prosthesis survivalSystematic review (4)36 months99.0% implant survival, ~1.3 mm bone lossJapanese cohort (5)3–17 yearsMaxilla 97.4%, Mandible 98.9% implant survivalProspective study (6)18 monthsZero failures, ~0.7 mm bone lossConcept review (2)–Immediate load, reduced grafting, cost savings
Why Choose Pain Free Dentist Sydney?
At Pain Free Dentist Sydney, we combine world-class All-on-4 techniques with a commitment to your comfort:
Sedation Dentistry & Gentle Care: Feel at ease during every step.
Advanced Digital Diagnostics: 3D imaging for precision treatment planning.
Proven Results: Evidence-based protocols designed for stability and minimal discomfort.
With cutting-edge techniques and a patient-first approach, you can transform your smile pain-free.
References
Maló, Paulo, et al. “All-on-4® Treatment Concept for Completely Edentulous Maxillae: A 3-Year Retrospective Clinical Study.” Clinical Implant Dentistry and Related Research, vol. 15, no. 1, 2013, pp. 88–96.
Srinivasan, Muralidhar, et al. “The All-on-Four Concept for Full-Arch Rehabilitation: A Systematic Review.” International Journal of Prosthodontics, vol. 30, no. 5, 2017, pp. 437–54.
Malo, Paulo, et al. “Immediate Function of Brånemark Implants in the Mandible: A Retrospective Clinical Study with 10 Years of Follow-Up.” Journal of the American Dental Association, vol. 144, no. 3, 2013, pp. 252–60.
Patzelt, Susanne B. M., et al. “The All-on-Four Treatment Concept: A Systematic Review and Meta-Analysis.” Clinical Implant Dentistry and Related Research, vol. 16, no. 6, 2014, pp. 836–55.
Uesugi, Takuya, et al. “The All-on-4 Concept for Fixed Full-Arch Rehabilitation in Edentulous Patients: A 3–17-Year Follow-Up Study in Japan.” International Journal of Implant Dentistry, vol. 9, 2023, p. 41.
Maló, Paulo, et al. “The All-on-Four Concept for Full-Arch Rehabilitation of the Edentulous Maxilla: A Prospective Study with 18 Months of Follow-Up.” Clinical Oral Implants Research, vol. 21, no. 3, 2010, pp. 271–77.
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