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For patients told they cannot have dental implants because of insufficient bone in the upper jaw, zygomatic and pterygoid implants provide a surgical route to full-arch rehabilitation that bypasses the deficient alveolar bone entirely. Zygomatic implants were developed in the 1990s and have over two decades of published follow-up data, with survival rates comparable to conventional implants in specialist hands. At Dazzle Dental Clinic, the implantology team has specific training in zygomatic and pterygoid protocols. Every case is planned from CBCT imaging in three dimensions before surgery begins.
Why Conventional Implants Fail in Severe Upper Jaw Bone Loss
When upper teeth are lost, the alveolar bone that housed the roots resorbs progressively. Simultaneously, the maxillary sinuses pneumatise — expanding downward into the space the bone occupied. Over years, patients can reach a point where there is genuinely insufficient bone height or width for conventional implants, even with sinus lift grafting. Major bone augmentation can address this, but adds 6–12 months to the timeline. For the detailed comparison of these approaches, see our sinus lift vs bone graft guide.
Zygomatic Implants: Mechanics and Placement
Zygomatic implants are longer than conventional implants — typically 35–52.5mm — and are designed to pass through or around the maxilla and anchor in the dense cortical bone of the zygoma. The zygomatic bone does not resorb with tooth loss. The ZAGA classification allows the surgical path to be planned according to each patient’s specific zygomatic anatomy. At Dazzle, CBCT-based virtual planning determines which approach is anatomically appropriate for each patient before surgery.
Quad-zygoma: When the anterior maxilla also lacks adequate bone for conventional implants, four zygomatic implants (two per side) can support the full upper arch without any conventional implants.
Pterygoid Implants: Posterior Anchorage Without the Sinus
Pterygoid implants are placed posteriorly through the maxillary tuberosity and anchored in the pterygoid plates. They are often combined with two anterior conventional or zygomatic implants to provide a four-implant full-arch solution without sinus involvement.
Immediate Loading: Same-Day Teeth
For the majority of zygomatic and pterygoid cases at Dazzle, immediate loading is achievable because zygomatic bone provides high primary stability. The patient leaves surgery with a functional provisional full-arch bridge. The final monolithic zirconia bridge is delivered at 3–6 months after osseointegration confirmation.
FAQs
Q1: Am I a candidate if I was told I cannot have regular implants?
Possibly yes. Dazzle offers remote CBCT review for international patients before travel is committed.
Q2: How long do zygomatic implants last?
Published follow-up at 10–15 years shows survival rates of 95–98% in specialist hands.
Q3: Is there more post-operative discomfort than conventional implants?
Yes. Swelling after zygomatic implant surgery is more pronounced than after conventional All-on-4 surgery, peaking at 48–72 hours. Prescribed analgesia and anti-inflammatory medication manages this effectively for most patients.
Q4: Can this be done under local anaesthesia?
Yes. Zygomatic implant surgery at Dazzle is performed under local anaesthesia with conscious sedation. General anaesthesia is available for patients who require it.
