Mechanical and Thermal Properties of Hydroxyapatite-Impregnated Bone Cement

Kemal ŞERBETÇİ

Article Details

Mechanical and Thermal Properties of Hydroxyapatite-Impregnated Bone Cement

Authors:

Kemal ŞERBETÇİ

Publisher:

TUBITAK

Journal:

Turkish Journal of Medical Sciences 2000 Vol.30 Issue 6, pp.543-549

Document Type:

Article

Publication Date:

5/2000

Document Language:

Turkish

Document ID (Org No.):

2000757469

Frequency:

Bimonthly

eISSN:

1303-6165

pISSN:

1300-0144

Keywords:

Abstract:

 

Self-curing acrylic cements,  consisting mainly of polymethylmethacrylate  (PMMA), are widely used in dentistry and  orthopedic surgery. One of the major side  effects of the standard PMMA application is  tissue necrosis at the bone-cement interface  due to the rise of temperature during the  polymerization reaction. This may also lead  to aseptic loosening over time. Therefore,  intense research is being carried out in the  development of bone cements with new  compositions. In this study, the aim was to  develop new bone cement compositions that  would have low setting temperature and high  mechanical strength and be comparable with  the commercially available ones. For this  purpose, PMMA bone cements having various  amounts of hydroxyapatite were prepared. In  order to obtain a proper and homogeneous  distribution of hydroxyapatite particles  within the cement, very low-viscosity PMMA  bone-cement compositions were developed.  The addition of hydroxyapatite decreased the  polymerization temperature (from 111 oC to  87 oC) and increased the compressive  strength (from 110 MPa to 122 MPa) of the  resultant cements. These new bone cements  have setting temperatures and mechanical  strengths comparable with commercially  available cements and are believed to be  more biocompatible since hydroxyapatite is a  natural mineral present in the bone structure.

 

Self-curing acrylic cements,  consisting mainly of polymethylmethacrylate  (PMMA), are widely used in dentistry and  orthopedic surgery. One of the major side  effects of the standard PMMA application is  tissue necrosis at the bone-cement interface  due to the rise of temperature during the  polymerization reaction. This may also lead  to aseptic loosening over time. Therefore,  intense research is being carried out in the  development of bone cements with new  compositions. In this study, the aim was to  develop new bone cement compositions that  would have low setting temperature and high  mechanical strength and be comparable with  the commercially available ones. For this  purpose, PMMA bone cements having various  amounts of hydroxyapatite were prepared. In  order to obtain a proper and homogeneous  distribution of hydroxyapatite particles  within the cement, very low-viscosity PMMA  bone-cement compositions were developed.  The addition of hydroxyapatite decreased the  polymerization temperature (from 111 oC to  87 oC) and increased the compressive  strength (from 110 MPa to 122 MPa) of the  resultant cements. These new bone cements  have setting temperatures and mechanical  strengths comparable with commercially  available cements and are believed to be  more biocompatible since hydroxyapatite is a  natural mineral present in the bone structure.

Article Details

Mechanical and Thermal Properties of Hydroxyapatite-Impregnated Bone Cement

Authors:

Kemal ŞERBETÇİ

Publisher:

TUBITAK

Journal:

Turkish Journal of Medical Sciences 2000 Vol.30 Issue 6, pp.543-549

Document Type:

Article

Publication Date:

5/2000

Document Language:

Turkish

Document ID (Org No.):

2000757469

Frequency:

Bimonthly

eISSN:

1303-6165

pISSN:

1300-0144

PMMA

bone cement

biomechanics

hydroxyapatite

biocompatible

Issues

Article Details

Mechanical and Thermal Properties of Hydroxyapatite-Impregnated Bone Cement

Authors: Kemal ŞERBETÇİ

Publisher: TUBITAK

Journal: Turkish Journal of Medical Sciences 2000 Vol.30 Issue 6, pp.543-549

Document Type: Article

Publication Date: 5/2000

Document Language: Turkish

Document ID (Org No.): 2000757469

Frequency: Bimonthly

eISSN: 1303-6165

pISSN: 1300-0144

PMMA

bone cement

biomechanics

hydroxyapatite

biocompatible

Issues

Authors:

Kemal ŞERBETÇİ

Publisher:

TUBITAK

Journal:

Turkish Journal of Medical Sciences 2000 Vol.30 Issue 6, pp.543-549

Document Type:

Article

Publication Date:

5/2000

Document Language:

Turkish

Document ID (Org No.):

2000757469

Frequency:

Bimonthly

eISSN:

1303-6165

pISSN:

1300-0144