Yang Yao-wu, Mao Tian-qiu, Sun Mo-yi, Chen Fu-lin, Chen Shu-jun, Yang Cheng
Department of Oral and Maxillofacial Surgery, Stomatological College, Fourth Military Medical University, Xi'an 710032, China.
Shanghai Kou Qiang Yi Xue. 2003 Aug;12(4):277-80.
To transform the sintered ostrich cancellous bone(ostrich true bone ceramic, OTBC) to multiphasic calcium phosphate ceramic and study its components and characterization.
The OTBC blocks were soaked in different concentration of sodium pyrophosphate (Na(4)P(2)O(7).H(2)O,NP) solution and heated to 1100 degrees C to transform its constitution from HAP into multiphasic calcium phosphate ceramics. Then the surface configuration of the material was observed by SEM and the following properties of the material:porosity,bending strength,mineral composition and element ratio were analyzed.
The prepared material was a kind of porous calcium phosphate ceramic composed of beta-TCP, HAP and NaCaPO(4). With increase of the NP concentration,the content of HAP decreased while beta-TCP and NaCaPO(4) increased. The average bending strength of the material was (1.95+/-0.46)Mpa,the Ca/P element ratio was 1.511 and the average porosity was(60.71+/-6.9)%. The pore size was uneven.
The OTBC could be transformed into beta-TCP /HAP /NaCaPO(4) multiphasic calcium phosphate ceramic by heating with NP. With characteristic porous structure, the prepared OTBC could become a new type of bone graft.
将烧结鸵鸟松质骨（鸵鸟真骨陶瓷，OTBC）转化为多相磷酸钙陶瓷并研究其成分和特性。
将OTBC块浸泡在不同浓度的焦磷酸钠（Na₄P₂O₇·H₂O，NP）溶液中，并加热至1100℃，以将其结构从羟基磷灰石（HAP）转变为多相磷酸钙陶瓷。然后通过扫描电子显微镜（SEM）观察材料的表面形态，并分析材料的以下性能：孔隙率、抗弯强度、矿物成分和元素比例。
制备的材料是一种由β-磷酸三钙（β-TCP）、羟基磷灰石（HAP）和磷酸氢钠钙（NaCaPO₄）组成的多孔磷酸钙陶瓷。随着NP浓度的增加，HAP含量降低，而β-TCP和NaCaPO₄含量增加。材料的平均抗弯强度为（1.95±0.46）MPa，钙/磷（Ca/P）元素比例为1.511，平均孔隙率为（60.71±6.9）%。孔径不均匀。
通过与NP一起加热，OTBC可以转化为β-TCP/HAP/NaCaPO₄多相磷酸钙陶瓷。所制备的OTBC具有独特的多孔结构，可成为一种新型的骨移植材料。
