Short-body zygomatic implant for cases with less severe maxillary atrophy. Engages the zygomatic process with a reduced length profile, enabling the extrasinus and ZAGA technique with lower surgical complexity.
| Implant Classification | Short Zygomatic Implant — zygomatic cortical anchorage at 30–40 mm depth |
| Primary Indication | Moderate posterior maxillary atrophy — zygomatic process accessible without full-length trajectory |
| Apex Design | Conical apex with spherical self-tapping tip and helical flutes for cortical purchase |
| Thread Design | Progressive trapezoidal threads — denser pitch at apical zone for dense zygomatic bone |
| Surface Treatment | NeoPoros — sandblasted + acid-etched (SLA) on full length except smooth cervical zone |
| Diameter | Ø 4.0 mm |
| Available Lengths | 30 / 32.5 / 35 / 37.5 / 40 mm (5 options) |
| Connection | Grand Morse® 16° internal cone — angled cervical emergence |
| Preferred Technique | Extrasinus / ZAGA 0–2 — lateral wall path, no sinus penetration required |
| Immediate Loading | Supported when primary stability criteria are met (torque ≥35 N.cm, ISQ ≥65) |
| Prosthetic Compatibility | Full Neodent GM system: MUA 0°/17°/30°, Ti-Base, digital workflows |
| Material | Grade IV/V titanium alloy |
A purpose-built bridge between conventional implants and full-length zygomatic systems — calibrated for the moderately atrophic maxilla.
The Neodent Zygoma S was developed to address a gap that had long existed in zygomatic implantology: patients with moderate posterior maxillary atrophy — significant enough to preclude conventional implants, yet not so severe as to require the 45–55 mm trajectory of a standard zygomatic implant. In these patients the zygomatic process is accessible at shorter depths (30–40 mm), allowing anchorage with a reduced-length body. The Zygoma S exploits precisely this anatomy, delivering the biomechanical security of zygomatic cortical engagement with less surgical complexity, a smaller osteotomy, and a reduced risk profile compared to the full Zygoma GM.
The defining clinical advantage of the Zygoma S is its alignment with the extrasinus technique and the ZAGA (Zygomatic Anatomy Guided Approach) classification system. In the extrasinus approach — ZAGA classes 0 through 2 — the implant body travels along the outer (lateral) surface of the posterior maxillary wall, completely bypassing the maxillary sinus. This eliminates sinus-related complications such as chronic sinusitis, oroantral communication, and the management burden of a trans-sinus implant body. The shorter length of the Zygoma S is geometrically aligned with the bone available in this extrasinus path: a shallower, more lateral trajectory that still achieves full engagement of the zygomatic process cortex. It is this combination — shorter trajectory, no sinus penetration, and dense cortical anchorage — that defines the Zygoma S clinical niche.
From a prosthetic standpoint, the Zygoma S connects via the Grand Morse® 16° cone, identical to the full-length Zygoma GM and the entire Neodent GM implant family. This compatibility means Multi-Unit Abutments (MUAs), Ti-Bases, digital scan bodies, and CAD/CAM workflows already used in the practice transfer directly to Zygoma S cases. The angled cervical emergence accommodates zygomatic anatomy, while the appropriate MUA angle (0°, 17°, or 30°) corrects the prosthetic platform to a parallelism usable for full-arch screw-retained prostheses without any additional custom components.
Clinically, the Zygoma S is most indicated in bilateral cases of moderate atrophy, where one Zygoma S per posterior quadrant is combined with two anterior conventional Grand Morse implants in an All-on-4 or All-on-6 configuration. It is also the implant of choice when a patient has refused sinus augmentation, when prior sinus lifts have failed, or when conventional posterior implant placement is anatomically impossible. Because zygomatic cortical bone is dense and naturally offers high primary stability regardless of maxillary ridge quality, the Zygoma S frequently supports same-day loading protocols — one of its most clinically valued features.
Every design element is optimized for the extrasinus trajectory and the cortical bone of the zygomatic process.
The Zygoma S occupies a distinct niche between standard implants and the full Zygoma GM — precise patient selection is the key to success.
Patients with significant posterior ridge resorption but sufficient anatomy for a 30–40 mm zygomatic trajectory. CBCT confirms zygomatic process accessibility at this depth with a compatible lateral wall profile (ZAGA 0–2).
The ZAGA classification system identifies patients whose lateral wall morphology supports an extrasinus implant path. Classes 0–2 — concave-to-flat lateral wall — are the ideal indication for the Zygoma S. Class 3 and 4 require a full-length approach.
For patients who have refused sinus lifts or alveolar augmentation — or where prior grafting has failed — the Zygoma S provides a graft-free posterior anchor in native zygomatic bone, bypassing the compromised maxillary ridge entirely.
When posterior conventional implant placement is impossible due to bone volume or sinus proximity, Zygoma S implants serve as the posterior pillars of a full-arch fixed rehabilitation combined with anterior conventional Grand Morse implants.
One Zygoma S per posterior quadrant provides symmetric bilateral posterior support for a full-arch prosthesis — a balanced configuration that distributes occlusal forces predictably and simplifies prosthetic planning.
When posterior implants have failed due to compromised bone quality or proximity to the sinus floor, the Zygoma S offers a rescue solution anchored in the reliable cortical bone of the zygomatic process, avoiding the problem site entirely.
Key steps and considerations for planning and placing the Zygoma S using the extrasinus ZAGA approach.
Pre-operative CBCT is mandatory. Import DICOM data into planning software (coDiagnostiX, Simplant, or equivalent) to measure zygomatic process depth, confirm lateral wall morphology, and classify the patient as ZAGA 0–2 for extrasinus compatibility. Confirm the Zygoma S length range (30–40 mm) matches the planned trajectory. If the anatomy requires deeper penetration, the Zygoma GM is indicated instead.
Elevate a full-thickness mucoperiosteal flap in the posterior maxilla to expose the lateral wall of the maxilla and the base of the zygomatic process. Clear visualization of the lateral cortex is essential — the extrasinus technique routes the implant along this surface without entering the sinus space. Use a surgical guide when available to verify entry angle and depth.
Using the dedicated Zygoma drill sequence, create a channel along the lateral cortex of the maxilla at the planned trajectory. The drill follows the outer bone surface without creating a sinus window — a defining feature of the extrasinus technique. Drill to the exact length of the selected implant (30, 32.5, 35, 37.5, or 40 mm) to maximize cortical thread engagement in the zygomatic process.
Insert the Zygoma S using the integrated holder at the planned angle. Advance until the smooth collar reaches the planned mucosal level. Measure insertion torque with a calibrated wrench. Primary stability in zygomatic cortical bone typically exceeds 35 N.cm. Record ISQ via resonance frequency analysis if available. Values ≥65 ISQ support immediate loading eligibility.
Seat the appropriate Grand Morse Multi-Unit Abutment at 32 N.cm — selecting 0°, 17°, or 30° based on implant angulation relative to the planned prosthetic axis. MUAs create the parallelism necessary for full-arch prosthetic delivery. Take a digital intraoral scan or conventional open-tray impression of all MUA positions.
If loading criteria are met, deliver the screw-retained provisional prosthesis on the day of surgery. The provisional should be in light occlusal contact — no lateral excursive load during the osseointegration phase. Monitor at 2 weeks, 6 weeks, and 3 months. Definitive full-arch prosthesis (acrylic, hybrid, or zirconia) is delivered after confirmed osseointegration, typically at 3–6 months post-operatively.
All Zygoma S sizes share Ø 4.0 mm diameter and Grand Morse® 16° connection. Length selection is driven by CBCT-measured zygomatic trajectory depth.
| Length | Diameter | Connection | ZAGA Compatibility | Clinical Note |
|---|---|---|---|---|
| 30 mm | Ø 4.0 mm | Grand Morse® 16° | ZAGA 0–1 | Most conservative option — minimal zygomatic penetration for near-adequate anatomy |
| 32.5 mm | Ø 4.0 mm | Grand Morse® 16° | ZAGA 0–1 | Additional 2.5 mm of zygomatic cortical purchase for improved primary stability |
| 35 mm | Ø 4.0 mm | Grand Morse® 16° | ZAGA 1–2 | Standard Zygoma S length — most frequently selected for moderate atrophy |
| 37.5 mm | Ø 4.0 mm | Grand Morse® 16° | ZAGA 1–2 | Greater zygomatic engagement — for more advanced posterior resorption within Zygoma S range |
| 40 mm | Ø 4.0 mm | Grand Morse® 16° | ZAGA 2 | Maximum Zygoma S length — at the transition point to Zygoma GM territory for ZAGA 2 anatomy |
The Zygoma S integrates seamlessly with the Grand Morse ecosystem. These components complete your surgical and prosthetic workflow.
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