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扫描电子显微镜分析金属和美学支架网格在解之前和之后

Jacqueline Adelina Rodríguez-Chávez¹, Hugo Marcelo Flores-Ruiz², Abigailt Flores-Ledesma³

¹Institute of Dental Research, Department of Integral Dental Clinics, University Center for Health Sciences, University of Guadalajara, Guadalajara, Mexico.

Korean journal of orthodontics

|January 24, 2025

概括

支架基础网格的形状在正牙治疗中显著影响剪接强度. 扫描电子显微镜揭示了网状缺陷影响结合强度,表明网状设计对于成功的支架粘附至关重要.

科学领域:

矯正牙科矯正牙科是一種矯正牙科.
生物材料科学生物材料科学
牙科材料牙科材料

背景情况:

支架基础网格设计对于正牙支架粘附至关重要.
了解网状特征对结合强度的影响,对于临床成功至关重要.
支架制造中的变化可能会导致影响性能的网格缺陷.

研究的目的:

为了研究支架底层网格设计如何影响剪接强度.
检查支架网格使用扫描电子显微镜 (SEM) 在解锁之前和之后.
为了将网格完整性与结合强度结果相关联.

主要方法:

九十个金属和美学支架被分为九个组.
扫描电子显微镜 (SEM) 用于评估初始支架网格完整性.
使用Transbond XT将支架粘合到前肢,然后进行剪切键强度测试.
在解后再次进行SEM分析以评估网状况.

主要成果:

在粘合之前,27.77%的支架表现出网状缺陷,一些组显示出100%的缺陷率 (G4,G5).
金属支架的平均剪接强度为9.67 ± 2.84 MPa,美学支架的平均剪接强度为11.21 ± 4.99 MPa.
根据支架类型和网格特征观察到剪接强度的显著差异 (P < 0.009).

结论:

这项研究表明,支架基网格形状是影响剪接强度的重要因素.
通过SEM观察到的网格完整性与粘合强度相关.
优化支架网格设计可能会提高正义牙科治疗的可预测性.

关键词:

粘合剂是一种粘合剂.支架支架是一个支架.扫描电子显微镜扫描电子显微镜剪切键强度剪切键强度

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Scanning Electron Microscopy

Scanning Electron Microscopy

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Preparation of Samples for Electron Microscopy

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...