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相关概念视频

Microcracking in Concrete01:20

Microcracking in Concrete

Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...

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在创伤后修复技术中插入方法和空隙/空隙形成:微CT分析.

Paulo Henrique Dos Santos Belo Junior1, Plinio Mendes Senna2, Cesar Dos Reis Perez2

  • 1Private Dentist, Rio de Janeiro, RJ, Brazil.

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概括
此摘要是机器生成的。

与传统或Centrix注射方法相比,玻璃离子体水泥的双填充技术导致的空隙较少. 这种改进的适应性对于更好的恢复性治疗结果至关重要.

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科学领域:

  • 牙科材料科学 牙科材料科学
  • 最少侵入性牙科是最少侵入性的牙科.

背景情况:

  • 牙湿对于无创性修复性治疗 (ART) 的成功至关重要.
  • 高粘度玻璃离子体水泥 (GIC) 在传统的ART插入中提出了挑战.
  • 尽量减少差距和空隙对于牙科修复的寿命和有效性至关重要.

研究的目的:

  • 用三种不同的GIC插入方法评估和比较ART修复中缺口和空隙的形成.
  • 确定哪种插入技术优化了腔体适应,并最大限度地减少了接口间隙.

主要方法:

  • 测试了三种ART插入技术:传统的,Centrix注射和一种新的双填充方法.
  • 微型计算机断层扫描 (micro-CT) 用于量化恢复牙的间隙和空隙体积.
  • 在所有组中都保持了标准化的ART程序,包括牙调节和矩阵应用.

主要成果:

  • 与传统和Centrix注射方法相比,双填充技术显示了明显较低的间隙体积.
  • 与传统技术相比,Centrix注射显示了较低的间隙体积.
  • 在这三种技术中,在空体积上没有发现统计学上显著的差异.

结论:

  • 双填充技术通过最大限度地减少空隙,为GIC增强的粘合性,重矿化和抗菌性质提供了卓越的腔体适应性.
  • 对于隙形成,Centrix注射技术提供了比传统插入更好的替代方案.
  • 优化GIC插入方法对于改善ART修复的临床性能至关重要.