定制植入物支持的修复的疲劳抵抗
Ulysses Lenz1, Renan Brandenburg Dos Santos1, Megha Satpathy2
1Postgraduate Program in Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo 99052-900, RS, Brazil.
Materials (Basel, Switzerland)
|July 30, 2025
概括
优化定制支柱 (CA) 设计显著提高了牙科植入物修复的机械可靠性. 与参考支柱相比,大多数测试的定制支柱设计显示出更好的疲劳极限,这表明恢复寿命更长.
科学领域:
- 生物材料科学 生物材料科学
- 机械工程 机械工程
- 牙科植入物学 牙科植入物学
背景情况:
- 植入物支持的修复的机械可靠性受自定义支柱 (CA) 设计的影响.
- 了解设计参数对疲劳极限的影响对于改善恢复寿命至关重要.
研究的目的:
- 评估设计参数如何影响定制支柱 (CA) 的疲劳极限.
- 为了比较优化的定制支柱设计与参考支柱 (RA) 的疲劳性能.
主要方法:
- 使用微计算机断层扫描和形束计算断层扫描对牙科植入物组件进行数字化.
- 创建一个逆向工程的参考支柱 (RA) 模型和生成36个自定义支柱 (CA),使用Taguchi直角阵列进行维度变化.
- 在ABAQUS中进行有限元分析 (FEA) 和使用Fe-safe的疲劳极限估计,然后进行ANOVA以确定有影响力的参数.
主要成果:
- ·米塞斯应力值在229MPa到302MPa之间.
- 94.4%的定制支柱 (CA) 的疲劳极限高于参考支柱 (RA).
- 确定了三个特定的设计参数,这些参数显著影响了植入物系统的疲劳性能.
结论:
- 定制支柱 (CA) 的设计过程涉及可以优化的关键参数.
- 优化这些参数可以导致显著更长的寿命植入物-部修复.
- 定制的支柱设计是确保牙科植入物的机械可靠性和耐用性的关键因素.
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