PMID: 11309786Apr 20, 2001Paper

Mechanical and histological evaluations of hydroxyapatite-coated and noncoated Ti6Al4V implants in tibia bone

Journal of Biomedical Materials Research
C K ChangC X Ding

Abstract

This paper evaluates the behavior of hydroxyapatite (HAP) coated and noncoated Ti6Al4V implants in dog tibia after 3 and 5 months implantation. HPA-coated implants were obtained by plasma spraying. XRD, SEM, and EPMA were employed to estimate the coating characteristics and their behavior in vivo. Investigation of material characteristics showed that the as-received coatings consisted mainly of amorphism and HAP phase. Other phases such as TCP and CaO were identified due to thermal changes of HAP particles in plasma flame. SEM micrographs showed a typical microstructure of plasma-sprayed coating. The as-received coating was formed by well-melted pancake-like splats that lead to a dense coating with a rough surface. Lamellar structure, micropores, and microcracks, observed inside the coating, are characteristic of plasma spraying. Push-out tests revealed that HAP coating had a significant promotion of interfacial shear strength. The shear strength between bone and HAP-coated implants was much higher than that between bone and noncoated implants due to the different bone-implant interfaces formed after implantation. SEM observation revealed a direct attachment between HAP coating and newly formed bone. However, noncoated implants...Continue Reading

References

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Citations

Jun 21, 2005·Journal of Materials Science. Materials in Medicine·M CimermanM Tonin
Jun 15, 2007·Journal of Materials Science. Materials in Medicine·Ahmed Mansour BalloTimo O Närhi
Jun 13, 2009·Journal of Materials Science. Materials in Medicine·Chunli YangChunyu Yang
Dec 1, 2011·Journal of Materials Science. Materials in Medicine·M Mehdikhani-NahrkhalajiS M Razavi
Feb 18, 2015·Materials Science & Engineering. C, Materials for Biological Applications·Rui ZhouYu Zhou
Jan 31, 2015·Journal of Materials Science. Materials in Medicine·Ya-Jing YeDa-Chuan Yin
Jun 17, 2003·Acta Orthopaedica Scandinavica·Olav Reikerås, Ragnhild B Gunderson
Feb 3, 2007·Journal of Biomedical Materials Research. Part a·Takayuki KobayashiKimihiro Yamashita
Jun 27, 2009·Science in China. Series C, Life Sciences·YuBo FANMing ZHANG
Oct 27, 2015·Archivum Immunologiae Et Therapiae Experimentalis·Ilona DudekDariusz Szukiewicz
Aug 7, 2014·ACS Applied Materials & Interfaces·Muralithran G KuttyAlireza Yaghoubi

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