在经过不同的砂喷射处理后,面陶对的粘合效率
Francesca Zicari1,2, Carlo Monaco2, Marcio Vivan Cardoso1
1KU Leuven, Department of Oral Health Sciences, Biomaterials-BIOMAT & UZ Leuven, 3000 Leuven, Belgium.
Dentistry journal
|July 26, 2024
概括
在烧结之前,砂喷射会增加表面粗度,但在烧结后,用30μmSiO2涂层Al2O3喷射砂,显著提高了面膜陶的粘合强度. 这种方法可以减少陶碎片.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 表面科学是一门学科.
背景情况:
- 是由于其机械性能而被广泛使用的牙科陶.
- 确保基框架和面陶之间有足够的粘合力,对于恢复寿命至关重要.
- 像砂喷射这样的表面处理方法用于增强机械互锁和化学结合.
研究的目的:
- 评估砂喷射时间 (化前与化后) 和颗粒大小对土表面粗度的影响.
- 为了确定这些砂喷射协议对石和可压陶之间的微拉伸键强度 (μTBS) 的影响.
- 为了将表面粗度 (Ra) 与μTBS值相关联.
主要方法:
- 预先烧结的样被分成几组,然后在烧结前或之后进行砂喷射,使用不同的Al2O3颗粒大小 (30-μm SiO2-涂层,50-μm,110-μm) 进行砂喷射.
- 测量表面粗度 (Ra) 使用透米仪进行测量.
- 在烧结和涂上面后,涂上可压缩的陶,并测试微条是否存在μTBS.
- 统计分析包括单向ANOVA和斯皮尔曼相关性.
主要成果:
- 在烧结之前的砂喷射显著增加了表面粗度,更大的颗粒产生了更高的Ra值 (例如,110μm Al2O3导致Ra = 3.4 ± 0.4μm).
- 烧结后用30μmSiO2涂层Al2O3进行砂喷射,产生较低的粗度 (Ra = 0.5 ± 0.1 μm),但产生最高的μTBS (28.5 ± 12.6 MPa).
- 最高的μTBS是在烧结后的砂喷射中实现的,其性能优于烧结前的处理和对照组.
结论:
- 在预烧结砂喷射之前,以颗粒大小依赖的方式增强石表面的粗度.
- 使用30μmSiO2涂层Al2O3的烧结后砂喷射优化了石和可压面板陶之间的粘合强度.
- 这种优化的粘合可能有助于减少临床应用中层陶骨折和破碎的发生率.
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