Functionally graded tricalcium phosphate/fluoroapatite composites

Lydia Helena Wong; Betty Tio; Xigeng Miao

doi:10.1016/S0928-4931(02)00020-6

Functionally graded tricalcium phosphate/fluoroapatite composites

Lydia Helena Wong, Betty Tio, Xigeng Miao^*

^*Corresponding author for this work

Nanyang Technological University

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

36 Citations (Scopus)

Abstract

This study was conducted to prepare fluorine-substituted apatite (FA)/beta-tricalcium phosphate (β-TCP) composites to combine the biostability of FA with the bioresorbability of β-TCP. The FA was prepared for the first time by mixing hydroxyapatite (HA) with aluminium fluoride (coded as AF). On the other hand, the β-TCP was prepared from a mixture of HA and CaHPO₄ (calcium hydrogen phosphate). The dissolution behaviour of the composites was tested using a 10-wt.% citric acid solution. Scanning electron microscopy (SEM) indicated that β-TCP dissolved in the citric acid much faster than FA, resulting in macropores among the FA matrix. In addition to bulk FA/β-TCP composites, novel functionally gradient FA/β-TCP composites were also prepared by varying the particle size and the volume content of the β-TCP granules. The functionally gradient FA/β-TCP composites could be used to design implants.

Original language	English
Pages (from-to)	111-115
Number of pages	5
Journal	Materials Science and Engineering C
Volume	20
Issue number	1-2
DOIs	https://doi.org/10.1016/S0928-4931(02)00020-6
Publication status	Published - May 31 2002
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

Ceramic composites
Fluoroapatite
Functionally gradient materials
Hydroxyapatite
Tricalcium phosphate

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10.1016/S0928-4931(02)00020-6

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title = "Functionally graded tricalcium phosphate/fluoroapatite composites",

abstract = "This study was conducted to prepare fluorine-substituted apatite (FA)/beta-tricalcium phosphate (β-TCP) composites to combine the biostability of FA with the bioresorbability of β-TCP. The FA was prepared for the first time by mixing hydroxyapatite (HA) with aluminium fluoride (coded as AF). On the other hand, the β-TCP was prepared from a mixture of HA and CaHPO4 (calcium hydrogen phosphate). The dissolution behaviour of the composites was tested using a 10-wt.% citric acid solution. Scanning electron microscopy (SEM) indicated that β-TCP dissolved in the citric acid much faster than FA, resulting in macropores among the FA matrix. In addition to bulk FA/β-TCP composites, novel functionally gradient FA/β-TCP composites were also prepared by varying the particle size and the volume content of the β-TCP granules. The functionally gradient FA/β-TCP composites could be used to design implants.",

keywords = "Ceramic composites, Fluoroapatite, Functionally gradient materials, Hydroxyapatite, Tricalcium phosphate",

author = "Wong, {Lydia Helena} and Betty Tio and Xigeng Miao",

year = "2002",

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doi = "10.1016/S0928-4931(02)00020-6",

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T1 - Functionally graded tricalcium phosphate/fluoroapatite composites

AU - Wong, Lydia Helena

AU - Tio, Betty

AU - Miao, Xigeng

PY - 2002/5/31

Y1 - 2002/5/31

N2 - This study was conducted to prepare fluorine-substituted apatite (FA)/beta-tricalcium phosphate (β-TCP) composites to combine the biostability of FA with the bioresorbability of β-TCP. The FA was prepared for the first time by mixing hydroxyapatite (HA) with aluminium fluoride (coded as AF). On the other hand, the β-TCP was prepared from a mixture of HA and CaHPO4 (calcium hydrogen phosphate). The dissolution behaviour of the composites was tested using a 10-wt.% citric acid solution. Scanning electron microscopy (SEM) indicated that β-TCP dissolved in the citric acid much faster than FA, resulting in macropores among the FA matrix. In addition to bulk FA/β-TCP composites, novel functionally gradient FA/β-TCP composites were also prepared by varying the particle size and the volume content of the β-TCP granules. The functionally gradient FA/β-TCP composites could be used to design implants.

AB - This study was conducted to prepare fluorine-substituted apatite (FA)/beta-tricalcium phosphate (β-TCP) composites to combine the biostability of FA with the bioresorbability of β-TCP. The FA was prepared for the first time by mixing hydroxyapatite (HA) with aluminium fluoride (coded as AF). On the other hand, the β-TCP was prepared from a mixture of HA and CaHPO4 (calcium hydrogen phosphate). The dissolution behaviour of the composites was tested using a 10-wt.% citric acid solution. Scanning electron microscopy (SEM) indicated that β-TCP dissolved in the citric acid much faster than FA, resulting in macropores among the FA matrix. In addition to bulk FA/β-TCP composites, novel functionally gradient FA/β-TCP composites were also prepared by varying the particle size and the volume content of the β-TCP granules. The functionally gradient FA/β-TCP composites could be used to design implants.

KW - Ceramic composites

KW - Fluoroapatite

KW - Functionally gradient materials

KW - Hydroxyapatite

KW - Tricalcium phosphate

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U2 - 10.1016/S0928-4931(02)00020-6

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SN - 0928-4931

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EP - 115

JO - Materials Science and Engineering C

JF - Materials Science and Engineering C

IS - 1-2

ER -

Functionally graded tricalcium phosphate/fluoroapatite composites

Abstract

ASJC Scopus Subject Areas

Keywords

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