Objective To investigate the osteogenic potential of four kinds of new bioactive ceramics combined with bovine bone morphogenetic proteins (BMP) and to explore the feasibility of using compounds as bone substitute material.Methods Ninety-six rats were divided into 4 groups(24 in each group). BMP was combined with hydroxyapatite(HA), tricalcium phosphate(TCP), fluoridated-HA(FHA), and collagen-HA(CHA) respectively. The left thighs of the rats implanted with HA/BMP, TCP/BMP, FHA/BMP,and CHA/BMP were usedas experimental groups. The right thighs of the rats implanted with HA, TCP, CHA, and decalcified dentin matrix(DDM) were used as control groups. The rats weresacrificed 1, 3, 5 and 7 weeks after implantation and bone induction was estimated by alkaline phosphatase(ALP),phosphorus(P), and total protein(TP)measurement. The histological observation and electronic microscope scanning ofthe implants were also made. Results The cartilage growth in the 4 experimental groups and the control group implanted with DDM was observed1 week after operation and fibrous connective tissues were observed in the other 3 control groups. 3 weeks after implantation, lamellar bone with bone marrow and positive reaction in ALP stain were observed in the 4 experimental groups. No bone formation or positive reaction in ALP stain were observed in the control groups. The amount of ALP activity, P value, and new bone formation in the experimental groups were higher than those in the control group(P lt;0.05). The amount of ALP activity, P value, and new bone formation in TCP/BMP group were higher than those in HA/BMP, CHA/BMP and FHA/BMP groups(P lt;0.05). There was no significant difference in TP between the BMP treatment group and the control groups. From 5th to 7th week, new bone formation, histochemistry evaluation, and the level of ALP、P、TP value were as high as those in the 3rd week. Conclusion New composite artificial bone of TCP/BMP, HA/BMP, CHA/BMP, and FHA/BMP all prove to be effective, but TCP/BMP is the most effective so that it is the most suitable biomaterial replacement of tissue. 

Citation： ZHU Minghua,ZENG Yi,SUN Tao,et al.. EXPERIMENTAL STUDY OF THE EFFECT OF NEW BONE FORMATION ON NEW TYPE ARTIFICIAL BONE COMPOSED OF BIOACTIVE CERAMICS. Chinese Journal of Reparative and Reconstructive Surgery, 2005, 19(3): 174-177. doi: Copy

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