Process for preparing fermorite-doped biological active bone cement
A bioactive, strontium apatite technology, applied in dental preparations, medical science, dentistry, etc., can solve the problems of increased mass production costs, unsuitable for human bone repair, etc., and achieves the effect of low cost and simple preparation process
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Embodiment 1
[0012] Embodiment 1: 0.6g cement mixing powder (Ca 4 (PO 4 ) 2 O and α-Sr 0.15 Ca 2.85 (PO 4 ) 2 Molar ratio m is 0.5:1.0) and 0.3g concentration y is 1mol / l H 3 PO 4 The aqueous solution (where x=0.15, that is, Sr / (Sr+Ca)=3%; the solid / liquid mass ratio z is 2.0:1) is mixed with a spatula for 30 seconds to form a uniform cement slurry, and the filling diameter is 6mm, height 12mm stainless steel cylinder mold and compacted with a pressure of 0.7MPa, the cylinder sample was inserted into a glass tube with a diameter of 6.5mm and a height of 13mm, and then placed in a glass tube with a temperature of 37°C and a relative humidity of 100 % of the environment, after pre-curing for 30 minutes, the sample was taken out and quickly immersed in SBF (simulated body fluid), and after 3 days, the final product composition of the solidified body was strontium-doped hydroxyapatite (Ca 8.87 Sr 0.27 (PO 4 ) 6 (OH) 0.28 , (Ca+Sr) / P=1.52). The average compressive strength of the s...
Embodiment 2
[0013] Embodiment 2: 0.60g cement mixed powder (Ca 4 (PO 4 ) 2 O and α-Sr 0.3 Ca 2.7 (PO 4 ) 2 The molar ratio m is 0.5:1.0) and 0.33g concentration y is 0.5mol / l H 3 PO 4 The aqueous solution (where x=0.3, that is, Sr / (Sr+Ca)=6%; the solid / liquid mass ratio z is 1.8:1) is mixed with a spatula for 30 seconds to form a uniform cement slurry, and the filling diameter is 6mm and the height 12mm stainless steel cylinder mold and compacted with a pressure of 0.7MPa, the cylinder sample was inserted into a glass tube with a diameter of 6.5mm and a height of 13mm, and then placed in a glass tube with a temperature of 37°C and a relative humidity of 100 % of the environment, after pre-curing for 30 minutes, the sample was taken out and quickly immersed in SBF (simulated body fluid), and after 3 days, the final product composition of the solidified body was strontium-doped hydroxyapatite (Ca 8.98 Sr 0.57 (PO 4 ) 6 (OH) 1.10 , (Ca+Sr) / P=1.59). The average compressive streng...
Embodiment 3
[0014] Embodiment 3: 0.6g cement mixing powder (Ca 4 (PO 4 ) 2 O and α-SrCa 2 (PO 4 ) 2 The molar ratio m is 1.0:1.0) and 0.4 g of H with a concentration y of 1.0 mol / l 3 PO 4 The aqueous solution (where x=1.0, that is, Sr / (Sr+Ca)=14.3%; solid / liquid mass ratio z is 1.5:1) is mixed with a spatula for 30 seconds to form a uniform cement slurry, and the filling diameter is 6mm, height 12mm stainless steel cylinder mold and compacted with a pressure of 0.7MPa, the cylinder sample was inserted into a glass tube with a diameter of 6.5mm and a height of 13mm, and then placed in a glass tube with a temperature of 37°C and a relative humidity of 100 % of the environment, after pre-curing for 30 minutes, the sample was taken out and quickly immersed in SBF (simulated body fluid), and after 3 days, the final product composition of the solidified body was strontium-doped hydroxyapatite (Ca 8.03 Sr 1.34 (PO 4 ) 6 (OH) 0.74 , (Ca+Sr) / P=1.56). The average compressive strength of...
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