Hydroxyapatite powders were synthesized by precipitation method, varying Ca/p ratio, pH, reation temperature, and reation time. The powders were heated at 1,200℃ and 1,300℃ for fabrication of dental prosthesis. The results are as follows: Synthesized powder showed the smallest particle in size, unde...
Hydroxyapatite powders were synthesized by precipitation method, varying Ca/p ratio, pH, reation temperature, and reation time. The powders were heated at 1,200℃ and 1,300℃ for fabrication of dental prosthesis. The results are as follows: Synthesized powder showed the smallest particle in size, under the conditions of pH 11, Ca/p 1.75, and reaction temperature 37℃. The hydroxyapatite was partially converted to α,β- TCP at 1,200℃. Mechenical strength of sample was affected by such powder preparation conditions as pH, Ca/p ratio, reation time and reaction temperature. The mechanical strength of sample prepared under the same conditions was increased with increasing sintering temperature. However higher mechanical strength was obtained from sample derived at Ca/p 1.75 followed by sintering at 1,200℃ for 2h, compared to sample prepared at Ca/p 1.75 and sintering temperature of 1,300℃.
Hydroxyapatite powders were synthesized by precipitation method, varying Ca/p ratio, pH, reation temperature, and reation time. The powders were heated at 1,200℃ and 1,300℃ for fabrication of dental prosthesis. The results are as follows: Synthesized powder showed the smallest particle in size, under the conditions of pH 11, Ca/p 1.75, and reaction temperature 37℃. The hydroxyapatite was partially converted to α,β- TCP at 1,200℃. Mechenical strength of sample was affected by such powder preparation conditions as pH, Ca/p ratio, reation time and reaction temperature. The mechanical strength of sample prepared under the same conditions was increased with increasing sintering temperature. However higher mechanical strength was obtained from sample derived at Ca/p 1.75 followed by sintering at 1,200℃ for 2h, compared to sample prepared at Ca/p 1.75 and sintering temperature of 1,300℃.
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