What Is a Sinus Lift? The Dental Procedure That Makes Upper Implants Possible

Written by Dr. Husna Khan, DDS

Serenity Dental of Bloomingdale · April 16, 2026

Educational purposes only. Sinus lift candidacy assessed with CBCT imaging at consultation. Call (630) 359-0105 to schedule.

A sinus lift is a surgical procedure that adds bone to the upper jaw between your jawbone and the maxillary sinuses. It is performed when there is not enough vertical bone height to support a dental implant safely — a condition that develops after upper back molars are lost and bone resorbs.

The procedure does not change how you look or feel day-to-day. What it does is build the foundation that makes a dental implant possible in a location where one would otherwise fail.

Why upper jaw implants sometimes need extra steps

Your maxillary sinuses are air-filled cavities that sit directly above the upper back teeth. When molars in that area are lost, two things happen simultaneously: the jawbone begins to resorb (shrink), and the sinus can expand downward into the space left behind — a process called sinus pneumatization.

The threshold that typically triggers a sinus lift recommendation is less than 8–10 mm of vertical bone height in the posterior upper jaw. Below that level, a standard-length implant cannot be anchored without risking sinus penetration.

Two surgical approaches — one decision made from your imaging

There is no single “sinus lift procedure.” There are two distinct techniques with different indications, recovery timelines, and costs.

The choice is not a patient preference — it is a clinical determination made from CBCT imaging. At Serenity Dental, Dr. Khan reviews your 3D scan and tells you clearly which approach applies to your anatomy and why.

What happens during a sinus lift

Regardless of approach, the core procedure is the same: the Schneiderian membrane (the thin lining of the sinus floor) is separated from the bone and elevated upward. Bone graft material is packed into the space below. The membrane acts as a biological ceiling, holding the graft material in place while new bone forms.

The graft material itself — typically processed donor bone (allograft) or synthetic bone substitute — provides a scaffold. Your own bone-forming cells migrate into it over 4–9 months and replace it with living bone. By the time the implant is placed, what started as a graft is now your own tissue.

The most important thing about sinus lift recovery

The critical instruction most patients underestimate: do not blow your nose for 2–3 weeks after surgery. The increased pressure can displace the membrane before it heals in position, disrupting the graft. Sneeze with your mouth open. Avoid straws. Avoid flying in the first two weeks.

Everything else about recovery — the swelling, the congestion, the dietary restrictions — is temporary and manageable. The no-nose-blowing rule is the one that matters most for outcome.

Patients in Bloomingdale, Glendale Heights, Carol Stream, Addison, and Schaumburg can call (630) 359-0105 to schedule a sinus lift consultation with Dr. Khan. Related: sinus lift service page · dental implants.