Sliding behavior of zirconia porous implant surfaces against bone

T. A. Dantas; S. Roedel; J. Mesquita-Guimarães; P. Pinto; J. C. M. Souza; M. C. Fredel; F. S. Silva; B. Henriques

doi:10.1002/jbm.b.34204

Sliding behavior of zirconia porous implant surfaces against bone

T. A. Dantas^*, S. Roedel, J. Mesquita-Guimarães^*, P. Pinto, J. C. M. Souza, M. C. Fredel, F. S. Silva, B. Henriques^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Different zirconia porous layers were produced on zirconia dense zirconia substrates byslip casting using powder with different mean sizes: 40 μm (Z40), 70 μm (Z70), and 100 μm (Z100). The dynamic and staticco efficients of friction against bovine femoral bone, mimicking the implantation process, were conducted using a ball-on-flat reciprocating sliding tribometer under 3 N of normal load. Additionally, the porous layers were assessed with regard to their low temperature degradation (aging). Results revealed that the porous layers were able to keep their integrity during thesliding testes against bone, with no zirconia particles being transferred to the bone. Results did not show significant differences (p > 0.05) in kineticand static COF values for Z40, Z70, Z100, and GRAD specimens, ranging from 0.53to 0.77 and 0.65 to 0.90, respectively. The aging tests revealed that all surfaces were prone to low temperature degradation (~49% of monoclinic content after 18 h). In conclusion, the cohesive integrity of the layers and relativelyhigh COF observed reveled that zirconia porous layers may be considered forreplacing the current implant surfaces, and are expected to improve their primary stability.

Original language	English
Pages (from-to)	1113-1121
Number of pages	9
Journal	Journal of Biomedical Materials Research - Part B Applied Biomaterials
Volume	107
Issue number	4
DOIs	https://doi.org/10.1002/jbm.b.34204
Publication status	Published - 19 Sept 2018
Externally published	Yes

Keywords

Biotribology
Bone
Gradient porosity
Low thermal degradation
Porous zirconia

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10.1002/jbm.b.34204

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title = "Sliding behavior of zirconia porous implant surfaces against bone",

abstract = "Different zirconia porous layers were produced on zirconia dense zirconia substrates byslip casting using powder with different mean sizes: 40 μm (Z40), 70 μm (Z70), and 100 μm (Z100). The dynamic and staticco efficients of friction against bovine femoral bone, mimicking the implantation process, were conducted using a ball-on-flat reciprocating sliding tribometer under 3 N of normal load. Additionally, the porous layers were assessed with regard to their low temperature degradation (aging). Results revealed that the porous layers were able to keep their integrity during thesliding testes against bone, with no zirconia particles being transferred to the bone. Results did not show significant differences (p > 0.05) in kineticand static COF values for Z40, Z70, Z100, and GRAD specimens, ranging from 0.53to 0.77 and 0.65 to 0.90, respectively. The aging tests revealed that all surfaces were prone to low temperature degradation (\textasciitilde{}49\% of monoclinic content after 18 h). In conclusion, the cohesive integrity of the layers and relativelyhigh COF observed reveled that zirconia porous layers may be considered forreplacing the current implant surfaces, and are expected to improve their primary stability.",

keywords = "Biotribology, Bone, Gradient porosity, Low thermal degradation, Porous zirconia",

author = "Dantas, \{T. A.\} and S. Roedel and J. Mesquita-Guimar{\~a}es and P. Pinto and Souza, \{J. C. M.\} and Fredel, \{M. C.\} and Silva, \{F. S.\} and B. Henriques",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley Periodicals, Inc.",

year = "2018",

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day = "19",

doi = "10.1002/jbm.b.34204",

language = "English",

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T1 - Sliding behavior of zirconia porous implant surfaces against bone

AU - Dantas, T. A.

AU - Roedel, S.

AU - Mesquita-Guimarães, J.

AU - Pinto, P.

AU - Souza, J. C. M.

AU - Fredel, M. C.

AU - Silva, F. S.

AU - Henriques, B.

PY - 2018/9/19

Y1 - 2018/9/19

N2 - Different zirconia porous layers were produced on zirconia dense zirconia substrates byslip casting using powder with different mean sizes: 40 μm (Z40), 70 μm (Z70), and 100 μm (Z100). The dynamic and staticco efficients of friction against bovine femoral bone, mimicking the implantation process, were conducted using a ball-on-flat reciprocating sliding tribometer under 3 N of normal load. Additionally, the porous layers were assessed with regard to their low temperature degradation (aging). Results revealed that the porous layers were able to keep their integrity during thesliding testes against bone, with no zirconia particles being transferred to the bone. Results did not show significant differences (p > 0.05) in kineticand static COF values for Z40, Z70, Z100, and GRAD specimens, ranging from 0.53to 0.77 and 0.65 to 0.90, respectively. The aging tests revealed that all surfaces were prone to low temperature degradation (~49% of monoclinic content after 18 h). In conclusion, the cohesive integrity of the layers and relativelyhigh COF observed reveled that zirconia porous layers may be considered forreplacing the current implant surfaces, and are expected to improve their primary stability.

AB - Different zirconia porous layers were produced on zirconia dense zirconia substrates byslip casting using powder with different mean sizes: 40 μm (Z40), 70 μm (Z70), and 100 μm (Z100). The dynamic and staticco efficients of friction against bovine femoral bone, mimicking the implantation process, were conducted using a ball-on-flat reciprocating sliding tribometer under 3 N of normal load. Additionally, the porous layers were assessed with regard to their low temperature degradation (aging). Results revealed that the porous layers were able to keep their integrity during thesliding testes against bone, with no zirconia particles being transferred to the bone. Results did not show significant differences (p > 0.05) in kineticand static COF values for Z40, Z70, Z100, and GRAD specimens, ranging from 0.53to 0.77 and 0.65 to 0.90, respectively. The aging tests revealed that all surfaces were prone to low temperature degradation (~49% of monoclinic content after 18 h). In conclusion, the cohesive integrity of the layers and relativelyhigh COF observed reveled that zirconia porous layers may be considered forreplacing the current implant surfaces, and are expected to improve their primary stability.

KW - Biotribology

KW - Bone

KW - Gradient porosity

KW - Low thermal degradation

KW - Porous zirconia

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JO - Journal of Biomedical Materials Research - Part B Applied Biomaterials

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Sliding behavior of zirconia porous implant surfaces against bone

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Keywords

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