Physical Properties of Calcium Phosphate-Alumina Bio ceramics as DentalImplants

M. HafidMBelafaquir, N. Merzouk, H. AlGana, L. Fajri
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引用次数: 3

Abstract

In order to perform new dental implant, we carried out investigations on α-alumina and calcium phosphate based composites. α-Alumina nano-powder were synthesized using reverse micelle method while calcium phosphate nano-powders with different molar ratio starting from 1.8 to 1.1 were synthesized by precipitation method, using calcium nitrate (Ca(NO3)2.4H2O) and ammonium hydrogen orthophosphate (NH4H2PO4) as precursor materials as source for calcium (Ca²+) and phosphate ((PO4)3-) ions respectively. Samples of respectively 5, 10 and 20% weight of Calcium phosphate powder were mixed with alumina, consolidated and sintered at 1400°C for 4 hours. The synthesized composites, in form of pellets were characterized for bulk density, apparent porosity, hardness and flexural strength properties.
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磷酸钙-氧化铝生物陶瓷牙种植体的物理性能研究
为了实现新型种植体,我们对α-氧化铝和磷酸钙基复合材料进行了研究。采用反胶束法合成α-氧化铝纳米粉体,以硝酸钙(Ca(NO3)2.4H2O)和正磷酸氢铵(NH4H2PO4)为前驱体材料,分别作为钙(Ca²+)和磷酸((PO4)3-)离子的来源,采用沉淀法合成1.8 ~ 1.1不同摩尔比的磷酸钙纳米粉体。将重量分别为5%、10%和20%的磷酸钙粉末与氧化铝混合,在1400℃下烧结4小时。合成的复合材料以球团的形式进行了堆积密度、表观孔隙率、硬度和抗弯强度的表征。
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