Maxillary Sinus Augmentation Techniques in Dental Implants

Maxillary sinus augmentation is a fundamental procedure in implant dentistry designed to address deficient vertical bone height in the posterior maxilla. By elevating the sinus membrane and introducing graft material beneath the Schneiderian lining, clinicians create a stable bony bed for implant osseointegration. Two principal surgical routes are employed: the lateral window technique, which offers direct visual access through a buccal window in the sinus wall, and the crestal approach, which uses osteotomes or specialised burs to lift the membrane via the implant osteotomy. Choice of graft—autologous bone, xenograft, allograft or synthetic substitute—and use of barrier membranes influence both early stability and long-term volume maintenance. Advances in digital planning, intraoperative imaging and novel instrumentation, including osseodensification burs, have refined both access and membrane elevation. Emerging alternatives, such as custom-made short implants with auxiliary retention features, further extend treatment options for severely resorbed ridges. A thorough grasp of sinus anatomy, membrane biomechanics and patient-specific factors is essential to maximise predictability and minimise complications.

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Maxillary Sinus Augmentation Techniques in Dental Implants publication trend

The graph below shows the total number of articles in maxillary sinus augmentation techniques in dental implants across all publications each year (not limited to Nature Index journals).

Technical terms

Schneiderian membrane: The delicate mucosal lining of the maxillary sinus, whose integrity is critical during augmentation.

Lateral window technique: A surgical approach creating a bony window on the lateral sinus wall to directly access and elevate the membrane.

Crestal approach: A less invasive elevation method performed through the implant osteotomy in the alveolar crest.

Osseodensification: A drilling protocol using specialised burs to compact bone and elevate the sinus membrane simultaneously.

Residual bone height: The vertical distance between the alveolar crest and the sinus floor available for implant anchorage.

References

1. Maxillary sinus floor augmentation: a review of current evidence on anatomical factors and a decision tree. International Journal of Oral Science (2023).
2. Evaluation of crestal sinus floor elevation in cases exhibiting an oblique sinus floor with a residual bone height of 4.0–7.0 mm using Densah burs with simultaneous implant placement: a prospective clinical study. International Journal of Implant Dentistry (2023).
3. Biomechanical evaluation of custom-made short implants with wing retention applied in severe atrophic maxillary posterior region restoration: A three-dimensional finite element analysis. Frontiers in Bioengineering and Biotechnology (2023).