Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat
Hydroxyapatite (HAp) coatings were deposited onto substrates of metal biomaterials (Ti, Ti6Al4V, and 316L stainless steel) by electrophoretic deposition (EPD). Only ultra-high surface area HAp powder, prepared by the metathesis method 10Ca(NO3)2 + 6(NH4)2HPO4 + 8NH4OH), could produce dense coatings...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , , |
| التنسيق: | article |
| منشور في: |
1999
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10725/4327 http://dx.doi.org/10.1023/A:1008975014015 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://link.springer.com/article/10.1023/A:1008975014015 |
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| _version_ | 1864513463221485568 |
|---|---|
| author | El Hayek, T. |
| author2 | Griffet, J. Odin, G. Pebeyre, B. Accorsi, E. |
| author2_role | author author author author |
| author_facet | El Hayek, T. Griffet, J. Odin, G. Pebeyre, B. Accorsi, E. |
| author_role | author |
| dc.creator.none.fl_str_mv | El Hayek, T. Griffet, J. Odin, G. Pebeyre, B. Accorsi, E. |
| dc.date.none.fl_str_mv | 1999 2016-09-20T12:45:30Z 2016-09-20T12:45:30Z 2016-09-20 |
| dc.identifier.none.fl_str_mv | 0957-4530 http://hdl.handle.net/10725/4327 http://dx.doi.org/10.1023/A:1008975014015 Griffet, J., Chevallier, A., El Hayek, T., Odin, G., Pebeyre, B., & Accorsi, E. (1999). Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat. Journal of Materials Science: Materials in Medicine, 10(7), 411-418. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://link.springer.com/article/10.1023/A:1008975014015 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Journal of Materials Science: Materials in Medicine |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Hydroxyapatite (HAp) coatings were deposited onto substrates of metal biomaterials (Ti, Ti6Al4V, and 316L stainless steel) by electrophoretic deposition (EPD). Only ultra-high surface area HAp powder, prepared by the metathesis method 10Ca(NO3)2 + 6(NH4)2HPO4 + 8NH4OH), could produce dense coatings when sintered at 875–1000°C. Single EPD coatings cracked during sintering owing to the 15–18% sintering shrinkage, but the HAp did not decompose. The use of dual coatings (coat, sinter, coat, sinter) resolved the cracking problem. Scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) inspection revealed that the second coating filled in the “valleys” in the cracks of the first coating. The interfacial shear strength of the dual coatings was found, by ASTM F1044-87, to be ∼12 MPa on a titanium substrate and ∼22 MPa on 316L stainless steel, comparing quite favorably with the 34 MPa benchmark (the shear strength of bovine cortical bone was found to be 34 MPa). Stainless steel gave the better result since α-316L (20.5 μm mK-1) > α-HAp (∼14 μm mK-1), resulting in residual compressive stresses in the coating, whereas α-titanium (∼10.3 μm mK-1) < α-HAp, resulting in residual tensile stresses in the coating. © 1999 Kluwer Academic Publishers |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_f6b741b56a3f98d8ba2848c9b4f8af9e |
| identifier_str_mv | 0957-4530 Griffet, J., Chevallier, A., El Hayek, T., Odin, G., Pebeyre, B., & Accorsi, E. (1999). Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat. Journal of Materials Science: Materials in Medicine, 10(7), 411-418. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/4327 |
| publishDate | 1999 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in ratEl Hayek, T.Griffet, J.Odin, G.Pebeyre, B.Accorsi, E.Hydroxyapatite (HAp) coatings were deposited onto substrates of metal biomaterials (Ti, Ti6Al4V, and 316L stainless steel) by electrophoretic deposition (EPD). Only ultra-high surface area HAp powder, prepared by the metathesis method 10Ca(NO3)2 + 6(NH4)2HPO4 + 8NH4OH), could produce dense coatings when sintered at 875–1000°C. Single EPD coatings cracked during sintering owing to the 15–18% sintering shrinkage, but the HAp did not decompose. The use of dual coatings (coat, sinter, coat, sinter) resolved the cracking problem. Scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) inspection revealed that the second coating filled in the “valleys” in the cracks of the first coating. The interfacial shear strength of the dual coatings was found, by ASTM F1044-87, to be ∼12 MPa on a titanium substrate and ∼22 MPa on 316L stainless steel, comparing quite favorably with the 34 MPa benchmark (the shear strength of bovine cortical bone was found to be 34 MPa). Stainless steel gave the better result since α-316L (20.5 μm mK-1) > α-HAp (∼14 μm mK-1), resulting in residual compressive stresses in the coating, whereas α-titanium (∼10.3 μm mK-1) < α-HAp, resulting in residual tensile stresses in the coating. © 1999 Kluwer Academic PublishersPublishedN/A2016-09-20T12:45:30Z2016-09-20T12:45:30Z19992016-09-20Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0957-4530http://hdl.handle.net/10725/4327http://dx.doi.org/10.1023/A:1008975014015Griffet, J., Chevallier, A., El Hayek, T., Odin, G., Pebeyre, B., & Accorsi, E. (1999). Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat. Journal of Materials Science: Materials in Medicine, 10(7), 411-418.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttp://link.springer.com/article/10.1023/A:1008975014015enJournal of Materials Science: Materials in Medicineinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/43272021-03-19T10:00:55Z |
| spellingShingle | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat El Hayek, T. |
| status_str | publishedVersion |
| title | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| title_full | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| title_fullStr | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| title_full_unstemmed | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| title_short | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| title_sort | Diaphyseal fractures treated by polylactide and hydroxyapatite pins. Experimental study in rat |
| url | http://hdl.handle.net/10725/4327 http://dx.doi.org/10.1023/A:1008975014015 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php http://link.springer.com/article/10.1023/A:1008975014015 |