探索水热处理回收非烧结牙科氧化锆废料的物理和机械特性

IF 3.3 2区 医学 Q2 ENGINEERING, BIOMEDICAL
Azam Valian , Amir Ghasemi , Ehsan Rastbood , Amin Zandian , Elham Zanguei
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引用次数: 0

摘要

背景和目的本研究探讨了在水热条件下回收加工过程中产生的残块的潜力。此外,研究还检测了回收样品的各种物理和机械性能,以评估其进一步使用的可行性。材料和方法在这项体外研究中,收集了阿曼吉尔巴赫块,其中一半经过了水热处理,另一半没有经过水热处理。然后对这些块体进行球磨。制备了单轴和等静压砌块,并从每种回收砌块中获得了 10 个样品。将这些样品与一种商用材料进行比较,并根据粉末类型和压制方法分成四组。回收样品的质量控制分析包括评估粒度分布、确定结晶相、分析颜色差异、检查微观结构和评估机械性能。采用正态分布计算(k-s 检验)、单因素方差分析、Brown-Forsythe、Tukey HSD 和 Games-Howell 检验等统计检验来比较四个组别并进行配对比较。结果对照商业组的抗弯强度和密度明显高于其他实验组(P = 0.000)。回收等静压实验体的线性收缩率明显低于其他实验体(P = 0.000)。通过 FESEM 和 XRD 对微观结构和结晶相进行的定性评估显示,不同组之间的晶粒大小和结晶相无明显差异。在中低应力水平的情况下,回收废料有望成为一种具有成本效益且可行的陶瓷修复体选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploring physical and mechanical properties of hydrothermally processed recycled non-sintered dental zirconia wastes

Background and aim

The present investigation explored the potential for recycling residual blocks obtained from the machining processes under hydrothermal conditions. Furthermore, the study examined the recycled samples’ various physical and mechanical properties to assess their viability for further use.

Materials and methods

In this in vitro study, Aman Girbach blocks were collected, half of which underwent a hydrothermal process, while the other half did not. The blocks were then subjected to ball milling. Uniaxial and isostatic pressed blocks were prepared, and 10 samples were obtained from each type of recycled block. These samples were compared to a commercial material, and four groups were formed based on the powder type and pressing method used. The quality control analysis of the recycled samples included assessing particle size distribution, identifying crystalline phases, analyzing color differences, examining microstructure, and evaluating mechanical properties. Statistical tests such as normal distribution calculations (k-s test), one-way ANOVA, Brown-Forsythe, Tukey HSD, and Games-Howell tests were used to compare the four groups and perform pairwise comparisons.

Results

The flexural strength and density of the control commercial group were significantly higher than the other experimental groups (P = 0.000). Linear shrinkage of recycled isostatic pressed experimental bodies was significantly lower than that of others (P = 0.000). Qualitative evaluation of microstructure and crystalline phase by FESEM and XRD showed no significant difference in grain size and crystalline phase between different groups.

Conclusion

The hydrothermal process is a promising way to recycle zirconia ceramic with lower energy consumption. Recycled waste demonstrates potential as a cost-effective and viable option for ceramic prostheses in situations with low to medium stress levels.

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来源期刊
Journal of the Mechanical Behavior of Biomedical Materials
Journal of the Mechanical Behavior of Biomedical Materials 工程技术-材料科学:生物材料
CiteScore
7.20
自引率
7.70%
发文量
505
审稿时长
46 days
期刊介绍: The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.
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