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Updated: Jun 22, 2025

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials
05:30

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

Published on: January 10, 2025

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根运河填充质量在曲的运河利用温暖的垂直紧缩和两个不同的单个形技术:一个三维微型计算机断层扫描研究研究

Yazdan Shantiaee1, Babak Zandi2, Mohammadreza Hosseini3

  • 1Dept. of Endodontics, School of Dentistry, Shahid Beheshti Medical University, Tehran, Iran.

Journal of dentistry (Shiraz, Iran)
|July 4, 2024
PubMed
概括

温暖的垂直压缩和单技术在根管填充中显示出类似的空隙和空隙体积. 顶端三分之一始终呈现出最多的空白,无论使用的堵塞方法如何.

关键词:
在 AH Plus 封装机上使用密封剂.微型CT技术的使用单个形技术 单个形技术绝对封闭密封器的密封器热的垂直压缩技术的热垂直压缩技术.

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Scanning Electron Microscopic Evaluation of Surface Defects of Remover Retreatment File After Single and Multiple Uses03:07

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Placing Concrete01:17

Placing Concrete

The concrete is placed as close as possible to its final position to avoid segregation. The placed concrete is then fully compacted to expel the entrapped air, and the next layer of concrete is laid while the underlying layer is still in the plastic state. The rate at which concrete is placed and compacted is kept equal.
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Porosity in Cement Paste01:18

Porosity in Cement Paste

The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
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Vibrating Concrete01:19

Vibrating Concrete

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Compacting Factor test01:22

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Total Voids in Concrete

Total voids in concrete encompass gel water volume, capillary pores, and entrapped air. Gel water (retained within the cement hydration products) and physically entrapped or adsorbed water are significant for the hydration process. For complete hydration, it's estimated that the space needed for the products of a cubic centimeter of cement doubles. Capillary pores constitute the unoccupied space within the hydrated cement paste, with their size largely influenced by the water-to-cement...
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