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具有不同半透明度的烯酸材料的机械性能:一个体外研究

Ayşe Rençber, Tahir Karaman

The International journal of prosthodontics

|February 21, 2024

概括

这项研究发现,石材料的半透明度会影响断裂强度,但老化并没有显著改变强度或硬度. 所有经过测试的合金类型都显示出可接受的强度,适用于牙科应用.

科学领域:

材料科学材料科学材料科学
生物材料工程生物材料工程
牙科陶牙科陶的使用.

背景情况:

陶由于其优良的机械性能,在牙科中被广泛使用.
的不同半透明度水平旨在提高美学效果,但它们对机械完整性的影响需要研究.
在口服条件下了解石的长期稳定性对于临床成功至关重要.

研究的目的:

为了评估不同半透明度的陶的双轴屈曲强度.
评估老化 (模拟和热循环) 对的机械性能和表面特性的影响.
为了确定各种半透明石材料的临床适用性.

主要方法:

准备了90个圆盘形样本,由三种半透明度的石制成.
标本通过模拟或热循环与对照组一起进行老化.
测量和统计分析了双轴屈曲强度,维克斯硬度和表面特征.

主要成果:

在基于半透明度的基材料中观察到骨折强度的显著差异.
阿普塞拉ST半透明石表现出最高的平均断裂强度 (1,932.87MPa),而卡塔纳UTML超高半透明石显示出最低的 (1,073.6MPa).
韦布尔分析表明,所有测试组的强度分布在统计上都相似,老化并没有显著影响骨折强度或硬度.

结论:

石材料的半透明度是影响其双轴屈曲强度的关键因素.
衰老程序,包括模拟和热循环,并没有显著地影响测试的材料的断裂强度或硬度.
所有经过评估的半透明石材料的断裂强度被认为是可接受的,用于口内假肢应用.

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