3-D Printed Bioactive Bone Replacement Scaffolds of Alkaline Substituted Ortho-Phosphates Containing Meta- and Di-Phosphates

F. Dombrowski; P.W. Garcia Caso; M.W. Laschke; M. Klein; J. Günster; Georg Berger

doi:10.4028/www.scientific.net/KEM.529-530.138

Paper Titles

Synthesis of Zinc-Containing Amorphous Calcium Phosphate
p.119

Computational Studies of Magnesium and Strontium Substitution in Hydroxyapatite
p.123

β-TCP Scaffolds with an Interconnected and Aligned Porosity Fabricated via Ice-Templating
p.129

The Effect of Sintering Temperature on the Microstructural and Mechanical Characteristics of Hydroxyapatite Macroporous Scaffolds Prepared via Freeze-Casting
p.133

3-D Printed Bioactive Bone Replacement Scaffolds of Alkaline Substituted Ortho-Phosphates Containing Meta- and Di-Phosphates
p.138

Fabrication of Three Different Types of Porous Carbonate-Substituted Apatite Ceramics for Artificial Bone
p.143

Evaluating Initial Content of the Slurry and Cooling Rate on the Microstructural and Mechanical Characteristics of Freeze Casted Hydroxyapatite Macroporous Scaffolds
p.147

Fabrication of Calcite Foam by Inverse Ceramic Foam Method
p.153

Characterization of α/β-TCP Based Injectable Calcium Phosphate Cement as a Potential Bone Substitute
p.157

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3-D Printed Bioactive Bone Replacement Scaffolds of Alkaline Substituted Ortho-Phosphates Containing Meta- and Di-Phosphates

Abstract:

The paper presented here deals with the investigations of orthophosphates (Q₀) containing none or differing amounts of meta-(Q₂) and diphosphate phases (Q₁) for the use of 3-dimensional printing process in order to create porous, bioactive, nonloadbearing bone replacement scaffolds. The main ceramic phase in all cases is Ca₁₀[K/N(PO₄)₇ hereinafter called 401545(100) consisting of 99,9% Q₀ and 0,1% Q₁-phase. The other phosphate ceramics i) 401545(40) consists of 75% Q₀-phase, 22% Q₁-phase and 4% Q₂-phase ii) 401545(15) consists of 65% Q₀-phase, 33% Q₁-phase and 2% Q₂-phase iii) 401545consists of 56% Q₀-phase, 40% Q₁-phase and 4% Q₂-phase. The in-house produced ceramics where crushed and sieved to achieve particles of irregular shape in the range of 45-90µm. These powders show a quite good flowability and were used to generate cylindrical samples with a diameter of 5,5mm and a height of 11mm via 3-dimensional printing using a R1 printer from ProMetal company (USA). After drying the samples at T=125°C for 48 hours they were sintered at temperatures according to the thermal analysis results in the range of 900°C up to 1300°C. Afterwards the porosity, the linear shrinkage and the compressive strength were determined.