Bioglass (BG) has been shown recently to be osteoconductive and osteopromotive in different experimental and clinical conditions. The aim of the present study was to evaluate BG particles in bone defects in rabbit tibia. In control sites, bone was observed only in the peripheral areas of the defects, while in test sites, newly formed bone was found around all BG particles, even those located in the central portion of the defect. Osteoblasts were actively secreting osteoid matrix directly on the granules’ surface. BG seems to be a highly osteoconductive material.

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