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两种多层和单色高伊特里亚含材料的柔性强度,根据不同的烧结参数

Niwut Juntavee¹, Apa Juntavee², Chutikarn Jaralpong³

¹Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.

European journal of dentistry

|September 20, 2023

概括

优化烧结温度和时间为5mol%的伊特里亚部分稳定 (5Y-PSZ) 显著影响曲强度. 更高的温度与更短的烧结时间产生与常规烧结相比或更好的结果,有助于牙修复.

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:

烧结参数极大地影响了基于的牙科材料的机械性能.
了解烧结温度和时间之间的相互作用对于优化的性能至关重要.
由于其有利的特性,5mol%的伊特里亚部分稳定 (5Y-PSZ) 在牙科修复中被广泛使用.

研究的目的:

研究不同烧结温度和时间对单色和多层5Y-PSZ曲强度的影响.
确定最佳的烧结条件,以提高5Y-PSZ的机械性能.

主要方法:

三百个单层 (Z_X) 和多层 (Z_M) 5Y-PSZ的样本在不同的温度 (1,450°C1,550°C) 和时间 (10135分钟) 条件下被烧结.
在引发应力表面的预裂后,测量了屈曲强度.
使用SEM和XRD分析了微结构和晶体相 (单临床,四角形,立方形).

主要成果:

通过增加烧结温度和短烧结时间 (例如,Z_XT_IH_S: 315.81 MPa,Z_MT_IH_S: 335.21 MPa) 实现了最高的屈曲强度.
较高的烧结温度或较长的烧结时间通常会导致显著更高的屈曲强度.
微观结构分析显示了细胞间和细胞间的骨折,主要是立方和四角形的.

结论:

通过增加温度和减少时间来优化烧结,可以达到与常规烧结协议相比或超过的屈曲强度.
这种方法被推用于5Y-PSZ的高效椅子边修复性重建.
这些发现为调整烧结工艺以满足特定临床需求提供了宝贵的见解.

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