Evaluation of long-term changes in bone graft height after maxillary sinus floor augmentation: a comparison between xenografts and synthetic material for bone grafts

Evaluation of long-term changes in bone graft height after maxillary sinus floor augmentation: a comparison between xenografts and synthetic material for bone grafts

Purpose: The purpose of this study was to assess the height change of graft bones in a long-term follow-up after maxillary sinus floor augmentation procedures and compare the difference between xenografts and synthetic material. Materials and Methods: The subjects comprised 28 patients (62 implants) who underwent sinus floor augmentation using the lateral window technique and staged implantation. Panoramic radiographs of the 28 patients were collected immediately after implantation and at follow-up. Results: Changes in the grafted bone height showed a statistically significant decreasing tendency with time in both groups. However, there was no significant difference between the groups. Conclusions: Both xenogeneic bones and synthetic bone substitute materials were resorbed with time but maintained their shape and properties after 10 years. Therefore, both materials are suitable for sinus augmentation and biphasic calcium phosphate, a synthetic bone substitute, has shown predictable stability in sinus augmentation during long-term follow-ups.