Severe bone atrophy of the upper jaw is one of the most challenging problems in classical implantology. The combination of prolonged edentulism, sinus pneumatisation, and progressive bone resorption creates patients with insufficient residual bone for standard implants — and for whom sinus lifting alone cannot provide a simple solution. Zygoma implants resolve this clinical impasse: instead of anchoring in the upper jaw bone, the implant apex engages the cheekbone (zygoma) — a dense structure that retains adequate volume regardless of upper jaw atrophy.
What Is a Zygoma Implant?
A zygomatic implant is significantly longer than a conventional dental implant: standard lengths range from 30–52.5 mm, compared with 8–16 mm for conventional implants. The apical portion of this long implant passes through the upper jaw and anchors in the zygomatic bone (os zygomaticum). Osseointegration with the zygoma is equally reliable as conventional implant-to-maxilla integration — but is entirely independent of sinus anatomy and upper jaw bone volume.
Differences from Conventional Implants
Who Is a Candidate for Zygoma Implants?
Zygoma implants are indicated in the following situations: posterior upper jaw bone height <4 mm on CBCT; sinus volume so large that sinus lifting is technically prohibitive; prior sinus augmentation has failed; the patient seeks complete upper jaw rehabilitation with the minimum number of surgical stages. In many cases, zygoma implants are used in combination with conventional implants: two zygoma (posterior) combined with two conventional (anterior) implants can support a full fixed upper arch prosthesis — a simplified version of the “Quad Zygoma” approach.
The Quad Zygoma Protocol
In severe pan-maxillary atrophy — bone loss across the entire upper jaw — the Quad Zygoma protocol places four zygomatic implants symmetrically in anterior and posterior positions, with no conventional implants required. A same-day fixed upper arch prosthesis is achievable with this approach — no bone grafting, no sinus lifting. Quad Zygoma is among the most surgically complex full-arch rehabilitations; it requires extensive surgical expertise, high-resolution CBCT planning, and a dedicated implant system.
The Role of Digital Planning
Planning zygoma implants is more complex than planning conventional implants. CBCT imaging quantifies the volume of the zygomatic bone, maps the implant trajectory (passing through or alongside the sinus), and assesses the residual upper jaw bone. In 3Shape Implant Studio, the complete path of each zygoma implant is planned virtually — minimising contact with the sinus membrane, maintaining safe distance from the orbital floor, and preventing incursion into the orbital cavity. This virtual planning is the foundation of surgical safety in zygoma procedures.
Conclusion
Zygoma implants represent the last line of implantological defence in severe upper jaw atrophy. Full upper arch rehabilitation with a same-day fixed prosthesis — without sinus lifting, without bone grafting — is possible with this technology. At Digital Implant in Baku, zygoma implant candidacy is determined through CBCT analysis, 3D virtual planning, and individual clinical profile assessment.