A comparative study of the physical and mechanical properties of porous hydroxyapatite scaffolds fabricated by solid freeform fabrication and polymer replication method

Jungsung Kim, Dohyung Lim, Yong Hwa Kim, Young Hag Koh, Mi Hee Lee, Inho Han, Sung Jae Lee, Oui Sik Yoo, Hansung Kim, Jongchul Park

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A novel porous scaffold designed for application as a bone substitute, with a structure containing three-dimensional (3D) pore channels in a hydroxyapatite (HA) scaffold, was fabricated using a combination of a solid freeform fabrication (SFF) and cast in a mold using freezing casting method. This study was performed to evaluate the physical and biomechanical properties of the HA scaffolds fabricated by SFF and using polymer replication method (PRM), one of the conventional methods. Although the phase composition and porosity of these two scaffolds are similar, their external shape and mechanical property were different. All of the fabricated scaffolds showed similar patterns through X-ray diffraction. The difference between porosities of two HA scaffolds were not statistically significant (P>0.05). However, the average compressive strength of the scaffold fabricated by SFF was 14.6 MPa, and that of the scaffold fabricated using polymer replication was 3.56MPa (P<0.05). It was confirmed that SFF fabrication could have a relatively higher mechanical property than PRM fabrication at the same porosity.

Original languageEnglish
Pages (from-to)695-701
Number of pages7
JournalInternational Journal of Precision Engineering and Manufacturing
Volume12
Issue number4
DOIs
Publication statusPublished - 2011 Aug 1

Fingerprint

Layered manufacturing
Hydroxyapatite
Scaffolds
Physical properties
Mechanical properties
Polymers
Porosity
Fabrication
Phase composition
Freezing
Compressive strength
Bone
Casting
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

@article{d92bdbb1339442c0b9142901947be389,
title = "A comparative study of the physical and mechanical properties of porous hydroxyapatite scaffolds fabricated by solid freeform fabrication and polymer replication method",
abstract = "A novel porous scaffold designed for application as a bone substitute, with a structure containing three-dimensional (3D) pore channels in a hydroxyapatite (HA) scaffold, was fabricated using a combination of a solid freeform fabrication (SFF) and cast in a mold using freezing casting method. This study was performed to evaluate the physical and biomechanical properties of the HA scaffolds fabricated by SFF and using polymer replication method (PRM), one of the conventional methods. Although the phase composition and porosity of these two scaffolds are similar, their external shape and mechanical property were different. All of the fabricated scaffolds showed similar patterns through X-ray diffraction. The difference between porosities of two HA scaffolds were not statistically significant (P>0.05). However, the average compressive strength of the scaffold fabricated by SFF was 14.6 MPa, and that of the scaffold fabricated using polymer replication was 3.56MPa (P<0.05). It was confirmed that SFF fabrication could have a relatively higher mechanical property than PRM fabrication at the same porosity.",
author = "Jungsung Kim and Dohyung Lim and Kim, {Yong Hwa} and Koh, {Young Hag} and Lee, {Mi Hee} and Inho Han and Lee, {Sung Jae} and Yoo, {Oui Sik} and Hansung Kim and Jongchul Park",
year = "2011",
month = "8",
day = "1",
doi = "10.1007/s12541-011-0090-z",
language = "English",
volume = "12",
pages = "695--701",
journal = "International Journal of Precision Engineering and Manufacturing",
issn = "1229-8557",
publisher = "Korean Society of Precision Engineering",
number = "4",

}

A comparative study of the physical and mechanical properties of porous hydroxyapatite scaffolds fabricated by solid freeform fabrication and polymer replication method. / Kim, Jungsung; Lim, Dohyung; Kim, Yong Hwa; Koh, Young Hag; Lee, Mi Hee; Han, Inho; Lee, Sung Jae; Yoo, Oui Sik; Kim, Hansung; Park, Jongchul.

In: International Journal of Precision Engineering and Manufacturing, Vol. 12, No. 4, 01.08.2011, p. 695-701.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A comparative study of the physical and mechanical properties of porous hydroxyapatite scaffolds fabricated by solid freeform fabrication and polymer replication method

AU - Kim, Jungsung

AU - Lim, Dohyung

AU - Kim, Yong Hwa

AU - Koh, Young Hag

AU - Lee, Mi Hee

AU - Han, Inho

AU - Lee, Sung Jae

AU - Yoo, Oui Sik

AU - Kim, Hansung

AU - Park, Jongchul

PY - 2011/8/1

Y1 - 2011/8/1

N2 - A novel porous scaffold designed for application as a bone substitute, with a structure containing three-dimensional (3D) pore channels in a hydroxyapatite (HA) scaffold, was fabricated using a combination of a solid freeform fabrication (SFF) and cast in a mold using freezing casting method. This study was performed to evaluate the physical and biomechanical properties of the HA scaffolds fabricated by SFF and using polymer replication method (PRM), one of the conventional methods. Although the phase composition and porosity of these two scaffolds are similar, their external shape and mechanical property were different. All of the fabricated scaffolds showed similar patterns through X-ray diffraction. The difference between porosities of two HA scaffolds were not statistically significant (P>0.05). However, the average compressive strength of the scaffold fabricated by SFF was 14.6 MPa, and that of the scaffold fabricated using polymer replication was 3.56MPa (P<0.05). It was confirmed that SFF fabrication could have a relatively higher mechanical property than PRM fabrication at the same porosity.

AB - A novel porous scaffold designed for application as a bone substitute, with a structure containing three-dimensional (3D) pore channels in a hydroxyapatite (HA) scaffold, was fabricated using a combination of a solid freeform fabrication (SFF) and cast in a mold using freezing casting method. This study was performed to evaluate the physical and biomechanical properties of the HA scaffolds fabricated by SFF and using polymer replication method (PRM), one of the conventional methods. Although the phase composition and porosity of these two scaffolds are similar, their external shape and mechanical property were different. All of the fabricated scaffolds showed similar patterns through X-ray diffraction. The difference between porosities of two HA scaffolds were not statistically significant (P>0.05). However, the average compressive strength of the scaffold fabricated by SFF was 14.6 MPa, and that of the scaffold fabricated using polymer replication was 3.56MPa (P<0.05). It was confirmed that SFF fabrication could have a relatively higher mechanical property than PRM fabrication at the same porosity.

UR - http://www.scopus.com/inward/record.url?scp=79961037288&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79961037288&partnerID=8YFLogxK

U2 - 10.1007/s12541-011-0090-z

DO - 10.1007/s12541-011-0090-z

M3 - Article

AN - SCOPUS:79961037288

VL - 12

SP - 695

EP - 701

JO - International Journal of Precision Engineering and Manufacturing

JF - International Journal of Precision Engineering and Manufacturing

SN - 1229-8557

IS - 4

ER -