3D打印的解剖后核的疲劳耐受性,在模拟后进行模拟
Timothy Gibson1, Tariq Alsahafi2, Wendy Clark3
1Resident, Division of Comprehensive Oral Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
The Journal of prosthetic dentistry
|October 6, 2023
概括
与3D打印的纳米陶树脂系统相比,传统的造金属后芯系统在经过内牙治疗的牙中表现出优越的耐疲劳性. 造金属柱子在所有模拟的周期中都幸存下来,与3D打印和无柱子组不同.
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
- 恢复性牙科 恢复性牙科
背景情况:
- 传统的刚性后芯系统是内牙治疗牙的标准.
- 灵活的纳米陶树脂正在成为替代品,但支持数据有限.
研究的目的:
- 为了比较造金属和3D打印纳米陶树脂后核系统与没有柱子的牙的耐疲劳性.
主要方法:
- 经过内牙治疗的前牙被分为造金属 (CM),3D打印树脂 (3DR) 和没有后 (0P) 组.
- 标本经历了120万次口周期和热循环.
- 使用生存统计数据进行了故障分析.
主要成果:
- 在疲劳失败周期中观察到显著的差异 (P<.001).
- 在120万个循环后,造金属柱没有出现故障.
- 3D打印的树脂柱子在平均95万个周期内失败,而没有柱子的牙在222,500个周期内失败.
结论:
- 造金属后芯系统具有出色的耐疲劳性.
- 3D打印的树脂和没有后台的标本在模拟时在宫三分之一的冠状骨折.
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