Long implants placed through the maxillary sinus floor to reach denser bone above. An alternative to sinus lift surgery for severe upper-jaw bone loss, often combined with zygomatic and pterygoid implants for full-arch restoration.
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Trans-sinus implants are long titanium implants — typically 18 to 25 millimeters — that pass through the maxillary sinus floor to anchor in denser bone above. Unlike a sinus lift (which adds bone to the sinus floor before conventional implant placement), trans-sinus implants thread directly through the existing anatomy without requiring bone augmentation.
The procedure is used for patients with severe upper-jaw bone loss where conventional placement isn't possible and a sinus lift either has failed or isn't preferred. It's part of Suncoast's full remote-anchorage toolkit alongside zygomatic and pterygoid implants — most trans-sinus cases are part of hybrid full-arch restorations combining several of these approaches.
Because of the precision required to thread an implant through the sinus floor safely, trans-sinus placement is performed using CBCT-planned custom surgical guides and often X-Nav navigated surgery for real-time positioning. The procedure is done under on-site general anesthesia delivered by an anesthesiologist from London Health Sciences Centre — Suncoast is the only practice in the area with the GA permit to do this.
Trans-sinus cases follow a similar timeline to other remote-anchorage procedures — most over 4 to 8 months from consultation to final restoration.
CBCT 3D imaging confirms sinus anatomy and bone density above the floor. We design the treatment plan and walk you through it visually.
Custom surgical guides designed and 3D-printed in our on-site lab from your CBCT — the guides determine exactly where the implant threads through the sinus floor.
On-site GA delivered by a London Health Sciences Centre anesthesiologist. Implant placement using the surgical guide and X-Nav navigation. Typically 2–4 hours depending on case complexity.
In most cases fixed temporary teeth are attached the same day; in some cases temporaries are added at a follow-up visit if initial stability requires it.
3 to 6 months of healing while implants integrate. Permanent restoration fitted afterward — typically zirconia or hybrid material on full-arch cases.
Common questions about trans-sinus placement.
Bring previous imaging if you have it. We'll do our own CBCT and tell you honestly whether trans-sinus placement is right for your case — alone or in combination with other remote-anchorage procedures.