



@article {2228,
	title = {Isotropic micropatterned silica coatings on zirconia induce guided cell growth for dental implants},
	journal = {Dental MaterialsDent. Mater.},
	volume = {27},
	year = {2011},
	note = {Cited By (since 1996): 6Export Date: 21 November 2012Source: ScopusCODEN: DEMAEdoi: 10.1016/j.dental.2011.02.014Language of Original Document: EnglishCorrespondence Address: Pelaez-Vargas, A.; INEB - Instituto de Engenharia Biom{\'e}dica, Divis{\~a}o de Biomateriais, Universidade Do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; email: alejopv@ineb.up.ptChemicals/CAS: resazurin, 550-82-3; silicon dioxide, 10279-57-9, 14464-46-1, 14808-60-7, 15468-32-3, 60676-86-0, 7631-86-9; yttrium, 7440-65-5; zirconium, 14940-68-2, 7440-67-7; Ceramics; Coated Materials, Biocompatible; Dental Implants; Dental Materials; Indicators and Reagents; Oxazines; Silicon Dioxide, 7631-86-9; Xanthenes; Yttrium, 7440-65-5; Zirconium, 7440-67-7; resazurin, 550-82-3; yttria stabilized tetragonal zirconiaReferences: Kasemo, B., Biocompatibility of titanium implants: Surface science aspects (1983) J Prosthet Dent, 49, pp. 832-837;Egusa, H., Ko, N., Shimazu, T., Yatani, H., Suspected association of an allergic reaction with titanium dental implants: A clinical report (2008) J Prosthet Dent, 100, pp. 344-347; 
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},
	month = {2011///},
	pages = {581 - 589},
	abstract = {Titanium implants are the gold standard in dentistry; however, problems such as gingival tarnishing and peri-implantitis have been reported. For zirconia to become a competitive alternative dental implant material, surface modification techniques that induce guided tissue growth must be developed. Objectives: To develop alternative surface modification techniques to promote guided tissue regeneration on zirconia materials, for applications in dental implantology. Methods: A methodology that combined soft lithography and sol-gel chemistry was used to obtain isotropic micropatterned silica coatings on yttria-stabilized zirconia substrates. The materials were characterized via chemical, structural, surface morphology approaches. In vitro biological behavior was evaluated in terms of early adhesion and viability/metabolic activity of human osteoblast-like cells. Statistical analysis was conducted using one-way ANOVA/Tukey HSD post hoc test. Results: Isotropic micropatterned silica coatings on yttria-stabilized zirconia substrates were obtained using a combined approach based on sol-gel technology and soft lithography. Micropatterned silica surfaces exhibited a biocompatible behavior, and modulated cell responses (i.e. inducing early alignment of osteoblast-like cells). After 7 d of culture, the cells fully covered the top surfaces of pillar microstructured silica films. Significance: The micropatterned silica films on zirconia showed a biocompatible response, and were capable of inducing guided osteoblastic cell adhesion, spreading and propagation. The results herein presented suggest that surface-modified ceramic implants via soft lithography and sol-gel chemistry could potentially be used to guide periodontal tissue regeneration, thus promoting tight tissue apposition, and avoiding gingival retraction and peri-implantitis. {\textcopyright} 2011 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.},
	keywords = {Adhesion, article, Biological behavior, biomaterial, biomedical and dental materials, cell adhesion, Cell culture, Cell Line, cell proliferation, Cell response, cell survival, Ceramic implants, ceramics, chemistry, Coated Materials, Biocompatible, Coatings, confocal microscopy, crystallography, Dental implant materials, Dental implantology, Dental Implants, Dental Materials, Dental prostheses, diagnostic agent, dyes, reagents, indicators, markers and buffers, Gels, Gold standards, Growth kinetics, Guided tissue regeneration, Guided Tissue Regeneration, Periodontal, heat, Hot Temperature, human, Human osteoblast-like cells, Humans, In-vitro, Indicators and Reagents, Lithography, materials testing, Micropatterned, Microscopy, Confocal, Microscopy, Electron, Scanning, osteoblast, Osteoblast-like cells, Osteoblastic cell adhesion, Osteoblasts, oxazine derivative, Oxazines, Peri-implantitis, Periodontal tissue, periodontics, phase transition, physiology, Raman spectrometry, resazurin, Scanning electron microscopy, Silica, Silica coatings, Silica film, Silica surface, silicon dioxide, Soft lithography, Sol-gel, Sol-gel chemistry, Sol-gel process, Sol-gel technology, Sol-gels, Sols, Spectrum Analysis, Raman, Stabilized zirconia, Statistical analysis, Surface modification techniques, Surface morphology, Surface Properties, surface property, Surface-modified, Surfaces, time, Time Factors, Tissue, Tissue growth, Titanium, Titanium implants, tooth implantation, Top surface, X ray diffraction, X-Ray Diffraction, xanthene derivative, Xanthenes, yttria stabilized tetragonal zirconia, Yttria stabilized zirconia, yttrium, Yttrium alloys, Zirconia, Zirconia materials, zirconium},
	isbn = {01095641 (ISSN)},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79955638770\&partnerID=40\&md5=31e0130d40aa381f08a781115b43fe2e},
	author = {Pelaez-Vargas, A. and Gallego-Perez, D. and Magallanes-Perdomo, M. and Fernandes, M.H. and Hansford, D.J. and De Aza, A.H. and Pena, P. and Monteiro, F.J.}
}
