Solid freeform fabrication of porous calcium polyphosphate structures for bone substitute applications: In vivo studies
Identifieur interne : 001487 ( Main/Exploration ); précédent : 001486; suivant : 001488Solid freeform fabrication of porous calcium polyphosphate structures for bone substitute applications: In vivo studies
Auteurs : Yaser Shanjani [États-Unis] ; Youxin Hu [Canada] ; Ehsan Toyserkani [Canada] ; Marc Grynpas [Canada] ; Rita A. Kandel [Canada] ; Robert M. Pilliar [Canada]Source :
- Journal of Biomedical Materials Research Part B: Applied Biomaterials [ 1552-4973 ] ; 2013-08.
English descriptors
- Teeft :
- Acta biomater, Amorphous powders, Anisotropic effect, Appl biomater, Archimedes method, Available pore area, Average values, Biomater, Biomaterials, Biomed, Biomed mater, Biomedical materials research, Bone formation, Bone graft substitutes, Bone ingrowth, Bone ingrowth characteristics, Bone substitute, Bone substitute applications, Bone substitutes, Bone substitution, Central core regions, Circumferential regions, Complex forms, Complex shapes, Conventional powder sintering, Conventional sintering, Current study, Degradation, Degradation rates, Diamond wafering blade, Different aspects, Different implant segments, Different implant types, Different regions, Direction samples, Form implants, Freeform, Functional loading, Further sectioning, Further studies, Grynpas, Host bone junction, Image analysis, Implant, Implant axis, Implantation, Implantation period, Ingrowth, Kandel, Layer orientation, Light microscopy, Limited number, Long axis, Machining, Machining methods, Mater, Mechanical properties, Online issue, Percent porosity, Pilliar, Polyphosphate, Pore, Pore size, Pore size distribution, Pore size range, Porosity, Porous calcium polyphosphate, Porous calcium polyphosphate scaffolds, Porous calcium polyphosphate structures, Porous samples, Porous structures, Powder orientation, Powder size, Previous studies, Proximal, Proximal aspects, Qualitative assessment, Quantitative analysis, Quantitative assessment, Quantitative image analysis, Rabbit femoral condyle sites, Rapid bone ingrowth, Ready availability, Sample preparation, Sample types, Scanning electron microscopy, Sectioned longitudinally, Shanjani, Silicon carbide papers, Sinter, Sinter neck geometry, Sintering, Size range, Solid freeform fabrication, Theoretical density, Thin sections, Vivo, Vivo degradation, Vivo period, Volume percent, Volume percent porosity, Wiley periodicals.
Abstract
Porous calcium polyphosphate (CPP) structures with 30 volume percent porosity and made by solid freeform fabrication (SFF) were implanted in rabbit femoral condyle sites for 6‐wk periods. Two forms of SFF implants with different stacked layer orientation were made in view of prior studies reporting on anisotropic/orthotropic mechanical properties of structures so formed. In addition, porous CPP implants of equal volume percent porosity made by conventional sintering and machining methods were prepared. Bone ingrowth and in vivo degradation of the three different implant types were compared using back‐scattered scanning electron microscopy (BS‐SEM) of implant samples and quantitative analysis of the images. The results indicated bone ingrowth with all samples resulting in 30–40% fill of available porosity by bone within the 6‐wk period. In the 6‐wk in vivo period, approximately 7–9% loss of CPP by degradation had occurred. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2013.
Url:
DOI: 10.1002/jbm.b.32905
Affiliations:
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Biomaterials</title><title level="j" type="alt">JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B: APPLIED BIOMATERIALS</title><idno type="ISSN">1552-4973</idno><idno type="eISSN">1552-4981</idno><imprint><biblScope unit="vol">101B</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="972">972</biblScope><biblScope unit="page" to="980">980</biblScope><biblScope unit="page-count">9</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2013-08">2013-08</date></imprint><idno type="ISSN">1552-4973</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1552-4973</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Acta biomater</term><term>Amorphous powders</term><term>Anisotropic effect</term><term>Appl biomater</term><term>Archimedes method</term><term>Available pore area</term><term>Average values</term><term>Biomater</term><term>Biomaterials</term><term>Biomed</term><term>Biomed mater</term><term>Biomedical materials research</term><term>Bone formation</term><term>Bone graft substitutes</term><term>Bone ingrowth</term><term>Bone ingrowth characteristics</term><term>Bone substitute</term><term>Bone substitute applications</term><term>Bone substitutes</term><term>Bone substitution</term><term>Central core regions</term><term>Circumferential regions</term><term>Complex forms</term><term>Complex shapes</term><term>Conventional powder sintering</term><term>Conventional sintering</term><term>Current study</term><term>Degradation</term><term>Degradation rates</term><term>Diamond wafering blade</term><term>Different aspects</term><term>Different implant segments</term><term>Different implant types</term><term>Different regions</term><term>Direction samples</term><term>Form implants</term><term>Freeform</term><term>Functional loading</term><term>Further sectioning</term><term>Further studies</term><term>Grynpas</term><term>Host bone junction</term><term>Image analysis</term><term>Implant</term><term>Implant axis</term><term>Implantation</term><term>Implantation period</term><term>Ingrowth</term><term>Kandel</term><term>Layer orientation</term><term>Light microscopy</term><term>Limited number</term><term>Long axis</term><term>Machining</term><term>Machining methods</term><term>Mater</term><term>Mechanical properties</term><term>Online issue</term><term>Percent porosity</term><term>Pilliar</term><term>Polyphosphate</term><term>Pore</term><term>Pore size</term><term>Pore size distribution</term><term>Pore size range</term><term>Porosity</term><term>Porous calcium polyphosphate</term><term>Porous calcium polyphosphate scaffolds</term><term>Porous calcium polyphosphate structures</term><term>Porous samples</term><term>Porous structures</term><term>Powder orientation</term><term>Powder size</term><term>Previous studies</term><term>Proximal</term><term>Proximal aspects</term><term>Qualitative assessment</term><term>Quantitative analysis</term><term>Quantitative assessment</term><term>Quantitative image analysis</term><term>Rabbit femoral condyle sites</term><term>Rapid bone ingrowth</term><term>Ready availability</term><term>Sample preparation</term><term>Sample types</term><term>Scanning electron microscopy</term><term>Sectioned longitudinally</term><term>Shanjani</term><term>Silicon carbide papers</term><term>Sinter</term><term>Sinter neck geometry</term><term>Sintering</term><term>Size range</term><term>Solid freeform fabrication</term><term>Theoretical density</term><term>Thin sections</term><term>Vivo</term><term>Vivo degradation</term><term>Vivo period</term><term>Volume percent</term><term>Volume percent porosity</term><term>Wiley periodicals</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Porous calcium polyphosphate (CPP) structures with 30 volume percent porosity and made by solid freeform fabrication (SFF) were implanted in rabbit femoral condyle sites for 6‐wk periods. Two forms of SFF implants with different stacked layer orientation were made in view of prior studies reporting on anisotropic/orthotropic mechanical properties of structures so formed. In addition, porous CPP implants of equal volume percent porosity made by conventional sintering and machining methods were prepared. Bone ingrowth and in vivo degradation of the three different implant types were compared using back‐scattered scanning electron microscopy (BS‐SEM) of implant samples and quantitative analysis of the images. The results indicated bone ingrowth with all samples resulting in 30–40% fill of available porosity by bone within the 6‐wk period. In the 6‐wk in vivo period, approximately 7–9% loss of CPP by degradation had occurred. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2013.</div></front></TEI><affiliations><list><country><li>Canada</li><li>États-Unis</li></country><region><li>Californie</li><li>Ontario</li></region><settlement><li>Toronto</li></settlement><orgName><li>Université de Toronto</li></orgName></list><tree><country name="États-Unis"><region name="Californie"><name sortKey="Shanjani, Yaser" sort="Shanjani, Yaser" uniqKey="Shanjani Y" first="Yaser" last="Shanjani">Yaser Shanjani</name></region></country><country name="Canada"><region name="Ontario"><name sortKey="Hu, Youxin" sort="Hu, Youxin" uniqKey="Hu Y" first="Youxin" last="Hu">Youxin Hu</name></region><name sortKey="Grynpas, Marc" sort="Grynpas, Marc" uniqKey="Grynpas M" first="Marc" last="Grynpas">Marc Grynpas</name><name sortKey="Kandel, Rita A" sort="Kandel, Rita A" uniqKey="Kandel R" first="Rita A." last="Kandel">Rita A. Kandel</name><name sortKey="Pilliar, Robert M" sort="Pilliar, Robert M" uniqKey="Pilliar R" first="Robert M." last="Pilliar">Robert M. Pilliar</name><name sortKey="Pilliar, Robert M" sort="Pilliar, Robert M" uniqKey="Pilliar R" first="Robert M." last="Pilliar">Robert M. Pilliar</name><name sortKey="Pilliar, Robert M" sort="Pilliar, Robert M" uniqKey="Pilliar R" first="Robert M." last="Pilliar">Robert M. Pilliar</name><name sortKey="Toyserkani, Ehsan" sort="Toyserkani, Ehsan" uniqKey="Toyserkani E" first="Ehsan" last="Toyserkani">Ehsan Toyserkani</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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