Superior bone regenerative properties of carbonate apatite with locational bone-active factors through an inorganic process.

Rapid bone regeneration is crucial for restoring alveolar bone and oral functions following periodontal diseases. However, the development of effective biomedical materials for this purpose remains insufficient. While bone autografts can enhance bone regeneration, they are invasive to healthy areas. Specifically, for alveolar bone regeneration, the implanted material must possess adequate mechanical strength. Moreover, local administration is preferred for older adults, who are a primary target population, to maintain their quality of life. We developed a silica-substituted carbonate apatite (COAp-silica) block as newly bone substitute with a bone growth factor, featuring the major inorganic component of mature bone to enhance bone regeneration. COAp-silica block stimulated the bone remodeling process at the implantation site and demonstrated significantly better bone regeneration compared to currently used carbonate apatite substitutes. Therefore, this new material is expected to advance technologies for restoring occlusal function after periodontal disease.