Zygomatic Implants

Surcam zygomatic implant specifications

• Diameters: Ø3.5 and Ø4.2 mm
• Lengths: 30–60 mm in 2.5 mm increments
• Connection: internal hex 2.43 mm
• Surface: SLA (dry alumina blasting and double acid etching)
• Design: cylindrical core with a dual/multiple thread pattern for controlled advancement, continuous crestal micro-threads, and an anchoring apex for trajectory control through the zygomatic pathway

Indications

Zygomatic implants are intended for severe maxillary atrophy where conventional implants, sinus augmentation or block grafting cannot provide reliable anchorage. They anchor in the dense bone of the zygoma to support fixed full-arch restorations, often in immediate-loading protocols. Final indication is case-dependent and requires CBCT-based planning, guided trajectory and specialist training.

For anatomy, intrasinus and extrasinus approaches, quad zygoma, outcomes and complications, read our zygomatic implants clinical guide.

Building the full-arch plan

• Prosthetic connection: restore with angled multi-unit abutments and a rigid cross-arch framework.
• Distal support: add pterygoid implants to anchor the posterior ends of the arch without grafting.
• Anterior support: combine with conventional dental implants in the premaxilla where bone allows.

See zygomatic and pterygoid implants placed together in Prof. Samer Sarouji's clinical case.

Zygomatic Implants FAQs

What are zygomatic implants used for?

They are indicated for severe maxillary atrophy, failed sinus grafts, posterior implant failures, maxillary defects, and full-arch reconstructions that cannot rely on conventional fixtures.

How many zygomatic implants are typically required?

Most atrophic maxillae are restored using one implant per side with additional anterior implants. For fully resorbed maxillae, a Quad-Zygoma protocol is used, placing two implants per side to support a complete fixed prosthesis.

What is the recommended insertion torque?

Clinical studies support insertion torque between 35–45 Ncm to achieve reliable immediate loading. Exceeding 45 Ncm may risk bone microdamage or implant complications.

Is immediate loading predictable with zygomatic implants?

Yes. Due to dense cortical anchorage in the zygoma, immediate loading with a cross-arch provisional is widely documented and often preferred.

What are the most common complications?

Sinusitis, infraorbital nerve paresthesia, orosinusal communication, and rare orbital involvement. Extrasinus positioning and correct preoperative imaging significantly reduce risk.

Can zygomatic implants be combined with standard implants?

Yes. Most protocols use a combination of zygomatic posterior anchorage and anterior conventional implants to improve cross-arch stability.