Preparation of Dense Polycrystalline Hydroxyapatite Ceramics for the Application of Tooth Implants

인공치아용 수산화 인산칼슘 요업체의 제조

  • 하조웅 (한국과학기술원 재료금속공학부) ;
  • 정형진 (한국과학기술원 재료금속공학부)
  • Published : 1983.01.01

Abstract

the preliminary work on the prepartion of fine hydroxyapatite powder and the synthesis of dense hydroxyapatite ceramic from the powder were investigated for the development of artificial bone and tooth materials for implants. The effects of the process variables such as compositions of the raw materials the initial pH of the solutions and sintering temperature on the physical properties were investigated in order to determine the optimum conditions for the fabrication of tooth implant material. As the initial pH of the solutions was increased in the range of 10-11.6 the initial particle size of precipitates was decreased thus the sinterability of precipitates was improved. It was found that the composition of calcium rich of 1.75 in Ca/P mole ratio exhibited better sinterability and mechanical strength of the apatite ceramics for example the highest value of Vicker's hardness obtained from the compositions of 1.75 in Ca/P mole ratio was 764±30 Kg/mm2 compared to the maximum value of 600 kg/mm2 obtained from the compositions of 1.67 in Ca/P mole ratio.

Keywords

References

  1. J. Austral. Ceram. Soc. v.9 no.2 The Potential of Ceramics as Prosthetic Materials D. J. MacGibbon;E. R. McCartny
  2. セラミッワス v.15 no.6 生とセラミッワス 加藤一男;靑木秀希
  3. セラミッワス v.10 no.7 生材料としてのアパタイド 靑木秀希;加藤一男
  4. Inorg. chem. v.13 no.1 Infrared Studies of Apatite B. O. Fowler
  5. 窯協 v.86 no.2 リン酸力ルシウムから非化量論水酸アパタイトの濕式生成過程 門間英毅;金孝文
  6. Nature v.247 Hydroxyapatite Formed from Coral Skeletal Carbonate by Hydrothermal Exchange D. M. Roy;S. K. Linnehan
  7. J. Dent. Res. v.57 no.5-6 The Growth of Calcium Phosphates on Hydroxyapatite Crystals.The Effect of Fluoride and Phosphate J. P. Barone;G. H. Nancollas
  8. J. Mater. Sci. v.11 no.11 Hydroxyapatite Synthesis and Characterization in Dense Polycrystalline Form M. Jarcho;C. H. Bolen;M. B. Thomas;J. Bobick;J. F. Kay;R. H. Doremus
  9. J. Appl. Chem. Biotechnol. v.23 no.7 The Large Scale Preparation of Chromatographic Grade Hydroxyapatite and Its Application in Protein Seperation Procedures A. Atkinson;P. A. Bradford;I. P. Selmes
  10. Nautre v.208 Intermediate States in the Prepartion of Hydroxyapatite E. D. Eanes;I. H. Gillessen;A. S. Posner
  11. J. Am. Ceram. Soc. v.54 no.11 Vibrational Spectra of Hydrothermally Prepared Hydroxyapatites K. C. Blakeslee;R. A. Condrate, Sr.
  12. J. Inorg. Nucl. Chem. v.29 no.2 The Structure and Composition of Some Calcium-Deficient Apatites E. E. Berry