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参与与非参与的支柱:一个体外研究,评估微隙和螺丝形态的变化

Fawaz M Alzoubi¹, Mohammad Y Sabti¹, Esra Alsarraf²

¹Department of General Dental Practice, College of Dentistry, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.

Dentistry journal

|August 28, 2024

概括

这项研究发现,在牙科植入物中循环加载后,参与和非参与的支柱之间,微隙大小或螺丝损伤没有显著差异. 这些发现表明,无论支柱 engagement engagement 类型,性能都相似.

科学领域:

牙科植入物学牙科植入物学
生物材料科学生物材料科学
牙修复牙修复牙修复牙修复牙修复

背景情况:

牙植入物中的微隙可以容纳细菌,可能导致围植入炎.
支柱设计,特别是引入 (E) 与非引入 (NE),可能会影响微隙形成和螺丝稳定性.

研究的目的:

为了比较单个单位和固定部分假牙 (FPD) 中的E和NE支柱之间的微隙大小.
在E和NE支柱配置中,在循环负荷 (CL) 后评估螺丝形态变化.
评估假肢设计对微隙和螺丝完整性的影响.

主要方法:

三十六种植入物被分为四组:带有E支柱的单个单位,带有NE支柱的单个单位,带有半接支柱的三个单位FPD和带有两个NE支柱的三个单位FPD.
使用立体显微镜测量微隙大小.
使用扫描电子显微镜 (SEM) 在轴向和侧向 (30°) 力下循环负荷 (1.0 × 10^6周期) 之前和之后对螺丝形态进行了定性评估.

主要成果:

在E和NE支柱组之间,以及不同假肢设计之间,没有观察到微隙大小的显著差异.
循环负荷在任何组中都没有显著改变微隙大小.
在CL之后,SEM显示了螺丝损伤,但E和NE支柱之间的损伤模式类似.

结论:

参与和非参与的支柱在单个单元和FPD配置中表现出可比的微隙大小.
假肢设计不会显著影响微隙尺寸.
循环加载后的螺丝形态变化对于参与和非参与的支柱都是相似的,这表明在这些条件下,在螺丝完整性方面,一个与另一个没有明显的优势.

关键词:

这就是SEM SEM.这里有很多东西,有很多东西,有很多东西.支持器件的设计.生物力学生物力学循环负荷是指循环负荷.这是一个微型的 microgap.形态学形态学形态学形态学假肢的设计.假肢假肢是一种假肢.螺丝形态学螺丝形态学

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