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    • Goldman School of Dental Medicine
    • GSDM: Historical Theses and Dissertations (BU access only)
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    • Goldman School of Dental Medicine
    • GSDM: Historical Theses and Dissertations (BU access only)
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    The effects of various ratios of in-ceram powders on mechanical properties and translucency of infused specimens

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    Date Issued
    2004
    Author(s)
    Bundugji, Maha
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    https://hdl.handle.net/2144/38846
    Abstract
    Purpose: This study was done to determine the flexural strength of the three different types of In-Ceram materials and In-Ceram spinell mixed with either 35 Wt% In-Ceram alumina or 38 Wt% In-Ceram zirconia. Materials and methods: Ninety seven bars were prepared representing eleven In-Ceram groups including the the three availalble types of In-Ceram (Alumina, Spinell,and Zirconia) and In-Ceram spinell mixed with either 35 Wt% In-Ceram alumina or 38 Wt% In-Ceram zirconia. In-Ceram alumina and zirconia groups were infiltrated with their corresponding glass or with spinell glass, while spinell In-Ceram groups were infiltrated with three available glasses. The two groups of spinell In-Ceram mixed with 35 wt% alumina In-Ceram were infiltrated with either spinell glass or alumina glass. The last two groups of In-Ceram spinell mixed with 38% zirconia In-Ceram were infiltrated with either spinell glass or zirconia glass. The flexural strength was measured using a four-point bend test. Results: Analysis of variance and Tukey’s multiple comparison post hoc tests demonstrated significant differences among the three original types of In-Ceram, with In-Ceram zirconia having the highest strength (p[less than] 0.05). Mixing In-Ceram spinell with In- Ceram alumina or zirconia did not result in a statistically significant improvement in flexural strength of In-Ceram spinell. Conclusion: Adding 35 Wt% alumina or 35 Wt% zirconia In-Ceram to In-Ceram spinell does not result in a significant increase in the strength of the material (p[less than] 0.05).
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    PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.
     
    Thesis (M.S.D.)--Boston University, Goldman School of Dental Medicine, 2004 (Restorative Sciences/Biomaterials).
     
    Includes bibliography (leaves 82-87).
     
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    This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.
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    • GSDM: Historical Theses and Dissertations (BU access only) [657]


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