3D打印和磨砂树脂基材料的柔性特性和疲劳极限
Neimar Sartori1,2, Said Arturo Sanchez3,4, Dayane Oliveira2
1Division of Prosthodontics, Department of Restorative Dental Sciences, University of Florida College of Dentistry, Gainesville, Florida, USA.
概括
与3D打印树脂相比,3D打印的复合材料表现出优越的屈曲强度和耐疲劳性. 虽然3D造和3D打印复合材料的曲性质相似,3D造材料显示出明显更高的疲劳耐力,表明更好的长期耐用性.
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
- 牙科材料 牙科材料
背景情况:
- 3D打印可以在牙科应用中进行定制.
- 评估3D打印材料的机械性能对于临床成功至关重要.
研究的目的:
- 评估3D打印树脂和复合材料的屈曲强度 (FS),屈曲模量 (FM) 和疲劳极限 (FL).
- 为了将这些特性与3D炼复合材料进行比较.
主要方法:
- 标本是3D打印 (假牙,临时CB,Flexcera) 和3D磨 (Ivotion) 按照ISO 4049:2019.
- 三点曲试验确定了FS和FM.
- 使用阶梯方法评估疲劳极限,最高可达120万次循环.
主要成果:
- 3D磨 (Ivotion) 和3D打印 (Flexcera) 的复合材料比3D打印的树脂 (牙,临时CB) 呈现出更高的FS和FM.
- 韦布尔的分析表明,Ivotion和Flexcera的缺陷分布更为均.
- 与Flexcera (40.95 MPa) 相比,Ivotion的疲劳耐力限值 (51.43 MPa) 高出25%.
结论:
- 3D造和3D打印的复合材料在曲性能和耐疲劳性方面超过了3D打印的树脂.
- 在3D造和3D打印的复合材料之间观察到类似的静态曲特性.
- 通过3D造的复合材料表明,由于优越的疲劳耐力,提高了临床寿命.
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