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Sinus Lift: Procedure, Techniques & Recovery

A sinus lift is a surgical procedure to augment bone in the upper jaw, performed to create sufficient bone volume for dental implant placement.

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Things worth knowing about "Sinus lift"

A sinus lift is a surgical procedure to augment bone in the upper jaw, performed to create sufficient bone volume for dental implant placement.

What is a Sinus Lift?

A sinus lift (also called sinus floor elevation or sinus augmentation) is an oral surgical procedure in which the floor of the maxillary sinus is raised to create additional bone volume in the upper jaw. This is necessary when there is insufficient bone height in the posterior upper jaw to securely anchor a dental implant. Bone loss can occur following tooth extraction, periodontal disease, or natural resorption over time. The sinus lift is a well-established standard procedure in implant dentistry.

When is a Sinus Lift Necessary?

A sinus lift is indicated when there is not enough bone in the upper back jaw to support an implant. Common reasons include:

Insufficient bone height in the posterior upper jaw (less than 8–10 mm)
Natural bone resorption following tooth loss
Enlargement of the sinus cavity (sinus pneumatization) after tooth extraction
Severe bone loss due to periodontal disease
Preparation for implant placement in the upper jaw

Techniques

Open Sinus Lift (Lateral Window Technique)

In the open sinus lift, a small window is created in the lateral wall of the maxillary sinus. The sinus membrane (Schneiderian membrane) is carefully elevated, and the resulting space is filled with bone grafting material. This technique allows for larger augmentation volumes and is used when residual bone height is less than 4–5 mm.

Closed Sinus Lift (Transalveolar Technique)

In the closed sinus lift, the sinus floor is elevated from below through the implant site using specialized instruments, without the need for a lateral window. This is a less invasive approach and is suitable when at least 5–6 mm of residual bone is present.

Procedure Overview

The procedure is typically performed on an outpatient basis under local anesthesia, though sedation or general anesthesia may also be used. After preparing the surgical access, bone grafting material (autologous bone, synthetic substitutes, or a combination) is placed into the elevated space. The wound is then carefully sutured closed. Depending on the technique and materials used, a healing period of 4–9 months is required before implant placement.

Risks and Possible Complications

As with any surgical procedure, complications are possible, though they are generally uncommon:

Perforation or tearing of the sinus membrane
Infection or sinusitis (inflammation of the sinus)
Post-operative bleeding
Inadequate integration or resorption of the graft material
Temporary numbness in the nose or cheek area

Aftercare and Recovery

Following a sinus lift, the following measures are important for successful healing:

Avoid blowing the nose or sneezing forcefully for several weeks
Take prescribed antibiotics and pain medication as directed
Attend regular follow-up appointments with the dentist or oral surgeon
Avoid smoking, as it significantly impairs bone healing

Once healing is complete, dental implants can be placed in the augmented area.

References

German Society for Implantology (DGI): Guidelines on sinus floor augmentation. Berlin, 2022.
Tatum H. Jr.: Maxillary and sinus implant reconstructions. Dental Clinics of North America, 1986; 30(2): 207–229.
Del Fabbro M. et al.: Implant survival rates after osteotome-mediated maxillary sinus augmentation. Clinical Oral Implants Research, 2012; 23 Suppl 6: 80–98.

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