In dental implantology, the natural remodeling of alveolar bone after extraction can lead to marked ridge atrophy. Studies indicate that alveolar ridge width can be resorbed by up to 50% within three months. In the posterior maxilla, sinus pneumatization frequently reduces available bone volume, affecting implant position and primary stability.

To manage these constraints, maxillary sinus lift and bone augmentation techniques have become key elements of clinical planning. The choice of graft material is central to maintaining space and supporting new bone formation in areas where native bone is limited.

Although autogenous bone grafts are regarded as the gold standard because of their osteogenic, osteoinductive and osteoconductive properties, they carry limitations including donor-site morbidity, additional surgical procedures and limited graft volume. These factors have driven clinical interest in bone substitute materials.

Bio-Oss is a deproteinized bovine cancellous bone substitute produced by removing proteins from bovine bone. It forms a porous structure similar to human cancellous bone and is described as highly biocompatible and biodegradable.

Clinical studies have reported outcomes for Bio-Oss in periodontal regeneration and maxillary sinus lift procedures. Research from the University of California, Los Angeles, found that in the treatment of intrabony defects, Bio-Oss used with a collagen membrane was significantly better than the control group in reducing probing depth, increasing clinical attachment and filling the defect.

Research conducted at an Amsterdam dental center reported that Bio-Oss is suitable for sinus floor elevation, particularly when mixed with autogenous bone particles, where it can support bone regeneration.

The highly porous surface of Bio-Oss supports interaction with bone formation, with particles becoming part of the new bone framework and maintaining volume over time. The material is available in different particle sizes to meet different clinical requirements.

In clinical use, combining the material with a Bio-Gide collagen membrane is recommended to provide barrier function in the surgical area and maintain a sustained regenerative environment.