Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Effect of pH and Reaction Temperature on Mechanical Properties of Hydroxyapatite for Dental prosthesis

치관보철용 Hydroxyapatite의 기계적 물성에 미치는 pH 및 반응온도의 영향

  • Chung, In-Sung (Dept. of Dental Laboratory Science, College of Health Sciences, Catholic University of Pusan) ;
  • Her, Ho-Young (Dept. of inorganic materials Engineering, Graduate School of Industry, Pusan National University)
  • 정인성 (부산가톨릭대학교 보건과학대학 치기공학과) ;
  • 허호영 (부산대학교 산업대학원 무기재료공학과)
  • Published : 2004.07.01
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Abstract

Hydroxyapatite powder were synthesized by precipitation method, varying pH, and reaction temperature. The powders were heated at 1,200$^{\circ}{\cdots}$ and 1,300$^{\circ}{\cdots}$ for fabrication of dental prosthesis. The results are as follows: Synthesized powder showed the smallest particle in size, under the conditions of pH 11 and reaction temperature 37$^{\circ}{\cdots}$. The hydroxyapatite was partially converted to $\alpha,\;\beta$-TCP at 1,200$^{\circ}{\cdots}$ and 1,300$^{\circ}{\cdots}$. Mechanical strength of sample was affected by such powder preparation conditions as pH and reaction temperature and sintering temperature. The mechanical strength of sample prepared under the same conditions was increased with increasing pH, reaction temperature and sintering temperature.

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