A zygomatic implant is a long dental implant that anchors into the cheekbone (the zygoma) instead of the upper jawbone. It’s designed for people who have lost so much bone in their upper jaw that standard implants can’t get a grip. Where a traditional dental implant measures roughly 8 to 15 millimeters, a zygomatic implant ranges from 30 to 55 millimeters, long enough to pass through the upper jaw and secure itself into the dense bone of the cheek.
The cheekbone is one of the thickest, most reliable bones in the skull. By using it as an anchor point, zygomatic implants allow people who were previously told they couldn’t have fixed teeth to get a full set of upper teeth, often in a single surgery and sometimes with teeth attached the same day.
Why Some People Need Zygomatic Implants
Traditional implants rely on having enough bone in the jaw’s alveolar ridge, the horseshoe-shaped ledge where teeth once sat. When teeth are missing for years, that ridge gradually shrinks. In severe cases, the remaining bone can thin to less than 3 or 4 millimeters, far too little to hold a standard implant. This is called severe maxillary atrophy, and it’s the primary reason zygomatic implants exist.
The bone loss can happen for several reasons: long-term denture wear, periodontal disease, failed previous implants, or medical conditions. Some patients have had bone grafts that didn’t take, or they’ve gone through multiple rounds of treatment that left them with even less bone than they started with. A systematic review in the International Journal of Implant Dentistry found that the most common reasons for placing zygomatic implants were extreme bone loss (cited in 118 studies), unsuccessful prior grafts or implants (34 studies), and the desire to avoid the lengthy bone grafting process altogether (29 studies).
Less common but well-documented indications include people who’ve had portions of their upper jaw removed due to tumors, those with birth defects like cleft palate, and patients with conditions that make traditional bone grafting risky.
How They Compare to Bone Grafting
Before zygomatic implants became available, the standard solution for a bone-deficient upper jaw was a multi-stage process. First, a surgeon would harvest bone from the hip, shin, or skull and graft it onto the jaw. Then you’d wait months for that graft to heal and integrate. Only then could implants be placed, followed by more healing time before teeth could be attached. The whole process could stretch past a year.
A comparative study found a striking difference in timelines: patients who received zygomatic implants reached functional loading (having usable teeth on their implants) in an average of 1.3 days, while the bone graft group took an average of 444 days. Zygomatic implant patients also required fewer dental visits overall. The clinical outcomes at the end of treatment were statistically equivalent between the two approaches, meaning neither produced better or worse final results. The zygomatic route simply got patients there faster and with fewer surgeries.
How the Surgery Works
The procedure is performed under general anesthesia or deep sedation. The surgeon makes an incision inside the upper lip to access the cheekbone area. A small window is opened in the outer wall of the maxillary sinus (the air-filled cavity behind your cheek), and the implant is carefully drilled through the jaw and into the cheekbone at a precise angle. The threaded tip of the implant, roughly 12.5 millimeters of threading, grips the dense cheekbone and generates strong holding force.
Newer surgical techniques route the implant along the outside of the sinus cavity rather than through it. This “extrasinus” approach avoids disturbing the sinus membrane and reduces sinus-related complications afterward. It also positions the top of the implant closer to the gum ridge, which makes for a less bulky and more natural-feeling final restoration.
Most treatment plans combine zygomatic implants in the back of the jaw with one or two conventional implants in the front, where bone is usually better preserved. When bone loss is truly extensive across the entire upper jaw, four zygomatic implants (two on each side) can be used without any conventional implants at all.
Same-Day Teeth and Recovery
One of the biggest draws of zygomatic implants is the possibility of immediate loading, meaning a temporary fixed bridge can be attached the same day as surgery or within a couple of days. This provisional set of teeth stays in place while the implants integrate with bone over the following months. Clinical reports on immediate loading have shown strong results, with implants remaining stable and symptom-free when checked at 6 to 10 months after placement.
The temporary prosthesis is eventually replaced with a permanent one, typically after about four to six months of healing. During recovery, expect swelling in the cheek and mid-face area, which is more pronounced than with traditional implants because of the surgical access required. Most patients manage pain with standard medications and return to soft-food eating within a few days.
Success Rates Over Time
A large meta-analysis pooling data from studies with follow-up periods ranging from 3 to nearly 12 years found a mean survival rate of 96.2% at six years. Three individual studies reported 100% survival at five, seven, and eight-and-a-half years respectively. The mean success rate, defined as survival without biological or neurological complications, was 95.7%.
These numbers are slightly lower than the success rates typically reported for conventional implants placed in healthy bone, but the comparison isn’t quite fair. Zygomatic implant patients start with the worst-case bone scenarios. Given that context, a survival rate above 96% over six-plus years is a strong result.
Potential Complications
Sinusitis is the most common complication. A systematic review found it occurs in about 3.9 out of every 100 zygomatic implants placed. The implant passes near or through the maxillary sinus, and irritation of the sinus lining, small perforations, or gaps between the implant and bone can trigger inflammation. In most cases, sinusitis is manageable with medication, though persistent cases occasionally require implant removal.
Oroantral fistula, a small opening that forms between the mouth and the sinus cavity near the implant site, occurs in roughly 1.5 to 7.5% of cases. This happens when bone doesn’t fully integrate around the upper portion of the implant, leaving a pathway for air or fluid. It often requires a minor corrective procedure.
Nerve-related numbness or tingling in the cheek or under the eye affects about 1.4% of patients overall, though some studies report rates as high as 5.4%. The good news is that in the majority of cases, sensation returns to normal within three to eight weeks as the affected nerves recover from surgical trauma.
Cost Considerations
Zygomatic implants are a specialized procedure, and the cost reflects that. On average, patients can expect to pay between $32,000 and $36,000 for treatment, though prices vary widely based on how many zygomatic implants are needed, whether conventional implants are also used, and the type of final prosthesis. This is generally higher than a standard implant-supported bridge in the upper jaw, but the comparison gets complicated when you factor in what the alternative looks like for these patients: multiple bone grafting surgeries, months of healing, and then implant placement on top of that. When the total cost and time of the grafting route are added up, zygomatic implants can be comparable or even more economical.
Insurance coverage varies. Some dental and medical plans cover portions of the procedure, particularly when it’s related to trauma, cancer reconstruction, or congenital conditions. Most patients benefit from requesting a predetermination from their insurer before committing to treatment.