The scaffold material for the bone formation in the defect must be bioabsorptive. The calcium mineral of the scaffold is used for newly formed bone. In this study, we clarified the tissue affinity and bioabsorption to three kinds of novel fine calcium carbonate particles, LUMINUS, CUBE-18BH and WHISCAL. These particles were added into cell culture, and the mitochondrial activity of culture cell was calculated. These particles were then implanted under the dorsal skin of the rats, and were histopathologically observed.
Five days after addition of the particles, there was no decrease in the mitochondrial activity. The implanted particles had completely disappeared with macrophages, without neutrophils. These kinds of fine calcium carbonate particles were bioabsorbable materials with few inflammatory reactions and were thought to be a useful scaffold for bone formation.
Key words: bioabsorption, lymphocytes, macrophages, calcium particles