What is a sinus lift and why is it needed?
The maxillary sinuses are air-filled spaces above the roots of the upper molars and premolars. When these back teeth are lost, two things tend to happen: the bone shrinks from below, and the sinus can expand downward from above. The result is often a thin layer of bone, sometimes only a few millimetres, between the mouth and the sinus. That is not enough to hold an implant securely.
A sinus lift, also called sinus augmentation, lifts the delicate membrane lining the sinus floor and places bone graft material in the space created. As the graft matures, it provides the height needed for an implant.
Two main approaches
- Crestal (internal) sinus lift: performed through the implant site itself when the bone is only moderately short. The sinus floor is gently tapped upward, graft material is added, and the implant can often be placed at the same visit.
- Lateral window sinus lift: used when bone height is very limited. A small window is made in the side wall of the upper jaw to lift the membrane and place more graft. The implant may be placed at the same time or after healing.
Who may need a sinus lift?
You may need this procedure if you are replacing upper back teeth and the CBCT shows insufficient bone height, particularly if the teeth were lost long ago or removed because of infection. It is not needed for lower teeth or for most front teeth.
A sinus lift may need to be postponed if you have an active sinus infection, chronic sinusitis that is not under control, or a recent cold with heavy congestion. Some patients are referred to an ear, nose and throat specialist first. Alternatives such as shorter implants, angled implant positioning within a full-arch plan, or a removable option can also be discussed.
Sinus lift treatment at E&D Dental, step by step
- Detailed 3D imaging. The HDX/HBX low-dose CBCT shows the shape of the sinus, the thickness of the remaining bone and any signs of sinus thickening.
- Choosing the method. Based on the measurements, we recommend a crestal or lateral approach and explain how the timeline differs.
- Comfortable numbing. Our 3-step painless anesthesia system starts with a topical gel or numbing gargle, then Endo-Frost cold numbing at the injection point, then computer-controlled anesthesia with electric stimulation.
- Membrane lift and grafting. The sinus membrane is raised carefully and the graft material placed beneath it. The smart sensor surgical light provides clear, shadow-free visibility for this delicate step.
- Implant placement. When enough bone is present to stabilise it, the implant is placed in the same session after UV surface activation; otherwise it follows once the graft has matured.
- Monitoring healing. Follow-up visits, imaging and AnyCheck stability measurements tell us when the implant can receive its crown.
Recovery and sinus precautions
Mild swelling, a feeling of pressure, and occasionally a slight nosebleed are common in the first days. The most important rule is to avoid sudden pressure changes in the sinus while it heals.
- Do not blow your nose forcefully; dab gently instead.
- Sneeze with your mouth open.
- Avoid drinking through a straw, swimming and flying until we advise it is safe.
- Avoid strenuous exercise and heavy lifting for several days.
- Take prescribed medication as directed and keep follow-up appointments.
Risks and limitations
The most common complication is a small tear in the sinus membrane, which is often repaired during the procedure but can sometimes require the graft to be postponed. Other possible issues include sinus infection or inflammation, swelling, bleeding and loss of some graft material. A lateral sinus lift adds months to treatment time. Patients with a history of sinus problems need extra caution, which is why we assess the sinus carefully on the scan beforehand.
Why patients in Sanbon and nearby choose E&D Dental
- Sinus anatomy is evaluated in 3D in our own clinic before any decision is made.
- We use the least invasive approach that the bone measurements allow.
- Vital-sign monitoring and careful anesthesia support patients with chronic health conditions.
- Clear explanations of whether a sinus lift is necessary or whether another option is reasonable.
Planning around work or travel? Our article on implant timelines explains how grafting affects scheduling. To check your upper jaw, arrange a CBCT consultation; the clinic is a five-minute walk from Sanbon Station on Line 4.