| Title | Laser surface treatment of hydroxyapatite for enhanced tissue integration: Surface characterization and osteoblastic interaction studies |
| Publication Type | Journal Article |
| 2007 |
| Authors | Teixeira, S, Monteiro, FJ, Ferraz, MP, Vilar, R, Eugénio, S |
| Journal | Journal of Biomedical Materials Research - Part AJ. Biomed. Mater. Res. Part A |
| Volume | 81 |
| Issue | 4 |
| Pagination | 920 - 929 |
| Date Published | 2007/// |
| 15493296 (ISSN) |
| article, Atomic force microscopy, Biocompatibility, biomaterial, cell adhesion, Cell Communication, Cell Line, Tumor, cell motility, cell proliferation, cell spreading, cellular distribution, ceramic prosthesis, ceramics, chemistry, confocal laser microscopy, controlled study, Durapatite, Excimer laser, Excimer lasers, human, human cell, Humans, hydroxyapatite, laser, Lasers, material coating, Microchemistry, Microscopy, Atomic Force, Microscopy, Confocal, Microscopy, Electron, Scanning, Microtexture, monolayer culture, osteoblast, Osteoblasts, reproducibility, Scanning electron microscopy, Surface microtopography, Surface modification, Surface Properties, surface property, Surface topography, Surface treatment, Tissue engineering |
| Biocompatibility has long been associated with surface microtopography, microtexture, and microchemistry. The surface topography eventually affects the nature and the intensity of the interactions that occur at biomaterial- biological interface (cell adhesion, mobility, spreading, and proliferation). Therefore, it is necessary to produce and work with controlled microtopographical surfaces that present reproducible microdomains of a dimension similar to that of the biological elements of interest (in this case, osteoblasts). There are a number of substrates that already have been studied in terms of surface topography; however, few studies are related to hydroxyapatite (HA) substrates. As it is well established, HA is a well-known ceramic that is extremely used in medical applications, namely implants and coatings. In this work, the surface topography of dense HA substrates was altered by using KFr excimer laser. The surface was characterized by atomic force microscopy and contact angle measurements, while the cell distribution and morphology was assessed by scanning electron microscopy and confocal laser scanning microscopy. Results revealed that the surface is characterized by a homogeneous columnar structure with high specific area. Moreover, cells were able to attach and spread on the surface of the samples, and gradually grow into nearly confluent monolayers. © 2007 Wiley Periodicals, Inc. |
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