Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method
Objective. To characterize the topographic and chemical properties of 2 bioceramic coated plateau root form implant surfaces and evaluate their histomorphometric differences at 6 and 12 weeks in vivo. Methods. Plasma sprayed hydroxyapatite (PSHA) and amorphous calcium phosphate (ACP) surfaces were c...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Biomaterials |
| Online Access: | http://dx.doi.org/10.1155/2012/603826 |
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| author | Estevam A. Bonfante Lukasz Witek Nick Tovar Marcelo Suzuki Charles Marin Rodrigo Granato Paulo G. Coelho |
| author_facet | Estevam A. Bonfante Lukasz Witek Nick Tovar Marcelo Suzuki Charles Marin Rodrigo Granato Paulo G. Coelho |
| author_sort | Estevam A. Bonfante |
| collection | DOAJ |
| description | Objective. To characterize the topographic and chemical properties of 2 bioceramic coated plateau root form implant surfaces and evaluate their histomorphometric differences at 6 and 12 weeks in vivo. Methods. Plasma sprayed hydroxyapatite (PSHA) and amorphous calcium phosphate (ACP) surfaces were characterized by scanning electron microscopy (SEM), interferometry (IFM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). Implants were placed in the radius epiphysis, and the right limb of dogs provided implants that remained for 6 weeks, and the left limb provided implants that remained 12 weeks in vivo. Thin sections were prepared for bone-to-implant contact (BIC) and bone-area-fraction occupancy (BAFO) measurements (evaluated by Friedman analysis 𝑃<0.05). Results. Significantly, higher Sa (𝑃<0.03) and Sq (𝑃<0.02) were observed for ACP relative to PSHA. Chemical analysis revealed significantly higher HA, calcium phosphate, and calcium pyrophosphate for the PSHA surface. BIC and BAFO measurements showed no differences between surfaces. Lamellar bone formation in close contact with implant surfaces and within the healing chambers was observed for both groups. Conclusion. Given topographical and chemical differences between PSHA and ACP surfaces, bone morphology and histomorphometric evaluated parameters showed that both surfaces were osseoconductive in plateau root form implants. |
| format | Article |
| id | doaj-art-90b3af87aa32404db4744c2d9b5e2ca3 |
| institution | Kabale University |
| issn | 1687-8787 1687-8795 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Biomaterials |
| spelling | doaj-art-90b3af87aa32404db4744c2d9b5e2ca32025-02-03T06:12:12ZengWileyInternational Journal of Biomaterials1687-87871687-87952012-01-01201210.1155/2012/603826603826Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray MethodEstevam A. Bonfante0Lukasz Witek1Nick Tovar2Marcelo Suzuki3Charles Marin4Rodrigo Granato5Paulo G. Coelho6Postgraduate Program in Dentistry, UNIGRANRIO University-School of Health Sciences, Rua Professor José de Souza Herdy, 1.160-25 de Agosto 25071-202, Duque de Caxias, RJ, BrazilDepartment of Biomaterials and Biomimetics, New York University, 345E 24th Street Room 813A, New York NY, 10010, USADepartment of Biomaterials and Biomimetics, New York University, 345E 24th Street Room 813A, New York NY, 10010, USADepartment of Prosthodontics and Operative Dentistry, Tufts University School of Dental Medicine, One Kneeland Street, Boston, MA, 02111, USAPostgraduate Program in Dentistry, UNIGRANRIO University-School of Health Sciences, Rua Professor José de Souza Herdy, 1.160-25 de Agosto 25071-202, Duque de Caxias, RJ, BrazilPostgraduate Program in Dentistry, UNIGRANRIO University-School of Health Sciences, Rua Professor José de Souza Herdy, 1.160-25 de Agosto 25071-202, Duque de Caxias, RJ, BrazilDepartment of Biomaterials and Biomimetics, New York University, 345E 24th Street Room 813A, New York NY, 10010, USAObjective. To characterize the topographic and chemical properties of 2 bioceramic coated plateau root form implant surfaces and evaluate their histomorphometric differences at 6 and 12 weeks in vivo. Methods. Plasma sprayed hydroxyapatite (PSHA) and amorphous calcium phosphate (ACP) surfaces were characterized by scanning electron microscopy (SEM), interferometry (IFM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). Implants were placed in the radius epiphysis, and the right limb of dogs provided implants that remained for 6 weeks, and the left limb provided implants that remained 12 weeks in vivo. Thin sections were prepared for bone-to-implant contact (BIC) and bone-area-fraction occupancy (BAFO) measurements (evaluated by Friedman analysis 𝑃<0.05). Results. Significantly, higher Sa (𝑃<0.03) and Sq (𝑃<0.02) were observed for ACP relative to PSHA. Chemical analysis revealed significantly higher HA, calcium phosphate, and calcium pyrophosphate for the PSHA surface. BIC and BAFO measurements showed no differences between surfaces. Lamellar bone formation in close contact with implant surfaces and within the healing chambers was observed for both groups. Conclusion. Given topographical and chemical differences between PSHA and ACP surfaces, bone morphology and histomorphometric evaluated parameters showed that both surfaces were osseoconductive in plateau root form implants.http://dx.doi.org/10.1155/2012/603826 |
| spellingShingle | Estevam A. Bonfante Lukasz Witek Nick Tovar Marcelo Suzuki Charles Marin Rodrigo Granato Paulo G. Coelho Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method International Journal of Biomaterials |
| title | Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method |
| title_full | Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method |
| title_fullStr | Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method |
| title_full_unstemmed | Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method |
| title_short | Physicochemical Characterization and In Vivo Evaluation of Amorphous and Partially Crystalline Calcium Phosphate Coatings Fabricated on Ti-6Al-4V Implants by the Plasma Spray Method |
| title_sort | physicochemical characterization and in vivo evaluation of amorphous and partially crystalline calcium phosphate coatings fabricated on ti 6al 4v implants by the plasma spray method |
| url | http://dx.doi.org/10.1155/2012/603826 |
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