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When the upper jaw loses most of its alveolar bone — through years of edentulism, failed implants, or severe periodontal disease — the ridge available for conventional implant placement can be reduced to a thin shell of bone or less. In these cases, the zygomatic bone (cheekbone) becomes the foundation. Zygomatic implants anchor in this structure, which is entirely separate from the resorbing alveolar process and remains dense and available regardless of how much the jaw has atrophied.
The Anatomy That Makes Zygomatic Implants Work
The zygoma forms the prominence of the cheek and contributes to the lateral orbital wall and the zygomatic arch. It is dense predominantly cortical bone with a robust blood supply. It does not undergo disuse atrophy following tooth loss — its function (facial structure, chewing muscle attachment points) is independent of the dentition. Zygomatic implants are 35–50mm in length. The cortical layers of the zygomatic body provide multi-cortex engagement — the implant locks into dense cortical bone rather than the trabecular bone that standard implants use for primary stability. For the initial patient guide and what questions to ask any clinic, see our patient guide to advanced implant options.
Surgical Approaches
Classic extrasinus approach (Maló technique): The implant trajectory passes external to the maxillary sinus. This is the preferred approach at most experienced centres because it reduces post-operative sinusitis risk.
Sinus slot (intrasinus) approach: The implant runs through a slot cut in the lateral sinus wall. Carries a higher theoretical sinusitis risk.
Quad-zygoma configuration: Four zygomatic implants (two per side), at different angulations, for the most severely atrophied maxillae.
Immediate Loading: Why It Works Here
Zygomatic implants are loaded immediately in almost all cases. The cortical engagement in the zygomatic body provides immediate mechanical stability (ISQ values typically 65–75 at placement — well above the 60–65 threshold for immediate loading). Patients leave with a fixed provisional bridge on the day of surgery. Soft diet for 6–8 weeks. Final prosthesis at 3–6 months.
Published Outcomes
Pooled published data: 10-year implant survival 95–98%, comparable to conventional implants in good bone. The primary complication is sinusitis — published rates 2–8% across studies, most resolving with antibiotic management. At Dazzle, zygomatic implant cases are followed at 3 months, 6 months, and annually. For case workflow details, see our zygomatic treatment workflow guide.
FAQs
Q1: Can I send my CBCT scan for assessment before travelling to Mumbai?
Yes. Send DICOM files to Dazzle’s clinical team. The implantologist reviews the zygomatic bone volume, sinus anatomy, and residual alveolar ridge to determine candidacy and plan the case before your consultation.
Q2: What is the risk of sinusitis after zygomatic implants?
Published rates: 2–8% across studies, most resolving with antibiotics and nasal irrigation without requiring implant removal.
Q3: How long does the zygomatic implant surgery take?
For two zygomatic + two anterior conventional: approximately 3–4 hours. Quad-zygoma: 4–5 hours.
Q4: Are zygomatic implants permanent?
Published 10-year survival data is 95–98%, comparable to conventional implants in good bone. Longevity is determined primarily by prosthesis maintenance and peri-implant hygiene.
