Zygomatic implants — anchorage beyond the jaw

When the upper jaw has lost so much bone that conventional implants have nothing to hold, extra-long implants anchored in the zygomatic (cheek) bone can carry a fixed bridge — often without grafting. It is the specialty's answer to the hardest implant question: 'I was told I have no bone.'

Author: Dr. Barış Kipritoğlu, Oral & Maxillofacial Surgeon Reviewed: 7 August 2026 Verified credentials

The problem it solves

Long-term denture wear, periodontal disease or failed implant treatment can leave the posterior maxilla with millimetres of bone beneath a pneumatised sinus. Conventional fixtures cannot engage such a ridge, and reconstructing it can require staged grafting over a year or more. The zygomatic bone above, dense and reliable, offers an anchor that is already there.

Candidacy — a narrow gate

Zygomatic implants may be considered when CBCT shows severe maxillary atrophy that makes conventional treatment unfeasible, sinus health is acceptable, and the patient can undergo longer surgery. They are not a shortcut for cases that ordinary implants or a modest graft would serve, and healthy sinus function matters: active sinus disease is addressed first.

Planning and the operation

The implant path is planned in three dimensions from the ridge, alongside or outside the sinus wall depending on anatomy (the anatomy-guided approach), into the body of the zygoma. One or two zygomatic fixtures per side are combined with conventional anterior implants where bone allows — or placed as a quad when it does not. With adequate stability, a fixed provisional bridge is attached in the immediate period, following the same load-management logic as full-arch treatment.

Risks — specific and worth stating plainly

Sinusitis is the characteristic late complication; it is usually manageable but can require treatment or, rarely, implant removal.
Soft-tissue recession around the implant head, orbital and infraorbital-nerve proximity, and cheek haematoma are technique-sensitive risks.
Prosthetic complications mirror full-arch treatment: the bridge is an engineered structure under continuous load.

Recovery

Swelling and bruising of the midface are more pronounced than with conventional implants and settle over one to two weeks. Sinus precautions apply. Review imaging and structured follow-up continue through the provisional period until the definitive prosthesis.

Common questions

Are zygomatic implants experimental?

No — the technique dates to the late 1990s (Brånemark) and has decades of published follow-up. It is, however, specialised surgery with a narrow indication: severe maxillary bone loss where conventional implants and reasonable grafting cannot work.

Why choose zygomatic implants over grafting?

In the severely atrophic maxilla, staged grafting can mean multiple surgeries over a year or more with uncertain volume gains. Zygomatic anchorage uses bone that is already there, often allowing fixed provisional teeth on the day of surgery. The trade-off is a more complex operation with its own specific risks.

What is a "Zygoma Quad"?

Four zygomatic implants — two per side — used when the front of the upper jaw offers no useful bone for conventional anterior fixtures. It is reserved for the most resorbed cases.

Who should perform this surgery?

Surgeons trained in the anatomy of the midface and sinus — the implant path runs alongside the maxillary sinus toward the orbit. This is exactly the territory oral & maxillofacial surgery training covers, and it is not entry-level implantology.