Comparison

All-on-4® treatment concept vs a fixed bridge on six implants

Four or six implants for a fixed bridge? A 2026 systematic review found similar survival; the choice depends on bone and the plan.

What actually differs

Similar survival in pooled data.¹
More implants give more support if one fails; fewer implants may avoid grafting.

Show only rows that differ

Feature	All-on-4® treatment concept 4 implants	Fixed bridge on 6 implants 6 implants
Design
Implants	4 (2 tilted)²	6, usually straight
Bone grafting	Often avoided via tilting³	May be needed in back areas
Pooled evidence (2026 review)
Long-term implant survival (≥5 y)	98.1%¹	97.5%¹
Bone loss at 5 years	1.28 mm¹	0.94 mm¹
Mechanical complications	5.9%¹	6.6%¹

Highlighted rows differ. A design difference is not evidence that one implant gives better results for you. No scores and no winner. The choice is a clinical and restorative decision.

Which one is right for me?

Neither is "better" in general. A design difference is not evidence that one gives better results for you. The surgeon decides based on your bone, the site and the planned teeth.

Would you like a clinician to explain which options fit your situation?

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Clinical review pending. Facts on this page are checked against the sources listed below (regulatory records, manufacturer documents, peer-reviewed research). A named clinician will review it before we call it medically reviewed.
Last updated 28 Sep 2026 · How we review

Sources

Systematic reviewShao WH et al. All-on-4 and All-on-6 implant-supported fixed prostheses: systematic review and meta-analysis. Int J Oral Maxillofac Surg 2026 — Int J Oral Maxillofac Surg, 2026. Accessed 28 Sep 2026.
Independent clinical studyMaló P et al. The All-on-4 treatment concept in the edentulous mandible: longitudinal study with 10–18 years of follow-up. Clin Implant Dent Relat Res 2019 — Clin Implant Dent Relat Res, 2019. Accessed 28 Sep 2026.
Systematic reviewChrcanovic BR et al. Tilted versus axially placed dental implants: a meta-analysis. J Dent 2015 — J Dent, 2015. Accessed 28 Sep 2026.

Clinical assessment

Find out whether implant treatment suits you

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This website does not diagnose. Only an examination by a dentist can confirm a treatment plan.

Dentist explaining a panoramic x-ray to a couple