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@Article{CamposRaMaBoSoMe:2016:NeSiYT,
               author = "Campos, T. M. B. and Ramos, N. C. and Machado, Jo{\~a}o Paulo 
                         Barros and Bottino, M. A. and Souza, R. O. A. and Melo, R. M.",
          affiliation = "{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and 
                         {Universidade Estadual Paulista (UNESP)} and {Instituto Nacional 
                         de Pesquisas Espaciais (INPE)} and {Universidade Estadual Paulista 
                         (UNESP)} and {Universidade Federal do Rio Grande do Norte (UFRN)} 
                         and {Universidade Estadual Paulista (UNESP)}",
                title = "A new silica-infiltrated Y-TZP obtained by the sol-gel method",
              journal = "Journal of Dentistry",
                 year = "2016",
               volume = "48",
                pages = "55--61",
                month = "May",
             keywords = "Bond strength, Flexural strength, Silica, Sol-gel, Weibull, 
                         Zirconia.",
             abstract = "Objective The aim of this study was to evaluate silica 
                         infiltration into dental zirconia (VITA In-Ceram 2000 YZ, Vita 
                         Zahnfabrik) and its effects on zirconia's surface characteristics, 
                         structural homogeneity and bonding to a resin cement. Methods 
                         Infiltration was performed by immersion of the pre-sintered 
                         zirconia specimens in silica sols for five days (ZIn). Negative 
                         (pure zirconia specimens, ZCon-) and positive controls (specimens 
                         kept in water for 5 days, ZCon+) were also performed. After 
                         sintering, the groups were evaluated by X-ray diffraction (XRD), 
                         grazing angle X-ray diffraction (DRXR), scanning electron 
                         microscopy (SEM), contact angle measurements, optical 
                         profilometry, biaxial flexural test and shear bonding test. 
                         Weibull analysis was used to determine the Weibull modulus (m) and 
                         characteristic strength (\σ0) of all groups. Results There 
                         were no major changes in strength for the infiltrated group, and 
                         homogeneity (m) was also increased. A layer of ZrSiO4 was formed 
                         on the surface. The bond strength to resin cement was improved 
                         after zirconia infiltration, acid conditioning and the use of an 
                         MDP primer. Conclusion The sol-gel method is an efficient and 
                         simple method to increase the homogeneity of zirconia. 
                         Infiltration also improved bonding to resin cement. Clinical 
                         significance The performance of a zirconia infiltrated by silica 
                         gel improved in at least two ways: structural homogeneity and 
                         bonding to resin cement. The infiltration is simple to perform and 
                         can be easily managed in a prosthesis laboratory.",
                  doi = "10.1016/j.jdent.2016.03.004",
                  url = "http://dx.doi.org/10.1016/j.jdent.2016.03.004",
                 issn = "0300-5712 and 1879-176X",
             language = "en",
           targetfile = "campos_anew.pdf",
        urlaccessdate = "27 nov. 2020"
}


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