根据不同的密封剂应用技术,各种坑洞和裂密封剂的微漏和透能力不同
Apa Juntavee1, Niwut Juntavee2, Achara Chaisuntitrakoon3
1Division of Pediatric Dentistry, Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.
Journal of clinical and experimental dentistry
|November 7, 2023
概括
与传统方法相比,诱导牙密封剂的应用显著减少了微泄漏,并增强了透. 超密封XT®在减少微型泄漏和改善密封剂透方面表现出卓越的性能.
科学领域:
- 牙科材料科学 牙科材料科学
- 预防性牙科 预防性牙科
- 恢复性牙科 恢复性牙科
背景情况:
- 牙密封剂的优越边缘适应性和更深的裂透可以改善预防性和修复性牙科的结果.
- 评估不同孔裂密封剂的微泄漏和透能力至关重要.
- 不同的应用技术对密封剂性能的影响需要研究.
研究的目的:
- 评估和比较各种坑裂密封剂的微泄漏和透能力.
- 评估传统与诱导应用技术对密封剂性能的影响.
- 为了确定密封剂类型和应用方法对边缘适应和裂穿透的影响.
主要方法:
- 160个人类前被随机分配到8个组,每个组都接受了特定的密封剂 (Embrace-Wetbond®,UltraSeal XT®,ClinproTM,Helioseal®) 通过常规 (C) 或诱导 (I) 应用.
- 密封的牙经历了500个热循环 (5°C55°C) 并浸入甲蓝中进行微泄漏评估.
- 使用偏光显微镜和图像-J软件量化微漏和密封剂透; SEM评估了密封剂的适应性.
主要成果:
- 与传统方法相比,诱导应用方法显著降低了微型泄漏,提高了密封剂的透率 (p<0.05).
- 在测试的密封剂中,UltraSeal XT® (UI) 的透率最高,微漏率最低.
- 根据密封剂类型和应用方法 (p<0.05) 观察到微漏和透的显著差异.
结论:
- 牙密封剂的类型和应用方法显著影响微漏和透能力.
- 建议使用诱导应用技术,以减少微漏,改善密封剂的透和适应性.
- 超密封XT®在降低微漏和增强透方面表现出卓越的性能.
相关概念视频
Microcracking in Concrete
124
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...
124
Pore Size Distribution
139
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
Adequate...
139
Permeability of Concrete
150
Permeability in the context of concrete refers to how easily liquids or gases can pass through the material. This quality is crucial for assessing the water-tightness and durability of concrete structures and their resistance to chemical attacks. Concrete permeability can be determined through comparative laboratory tests. These tests typically involve sealing a concrete specimen from the sides, applying water pressure to the top surface with pressure, and measuring the amount of water passing...
150
Cavity Drainage and Flashings in Masonry walls
90
Typically, a cavity wall consists of two wythes separated by a gap of at least 2 inches, which may contain insulation while still maintaining a minimum clear space of 1 inch to facilitate adequate drainage. Advanced methods like the insertion of a continuous drainage mat can further reduce this space while ensuring effective moisture expulsion.
Weep holes, strategically placed at the base of the cavity, are critical for draining accumulated water. These openings are created by leaving head...
Weep holes, strategically placed at the base of the cavity, are critical for draining accumulated water. These openings are created by leaving head...
90
Porosity in Cement Paste
146
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.
The balance of water to cement in the mix is...
The balance of water to cement in the mix is...
146
Mortar Properties
129
Mortar properties encompass a range of characteristics crucial for construction and masonry work, including workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Workability refers to mortar's ability to be easily applied and manipulated without sagging or falling off surfaces, which is important for efficient masonry unit placement and alignment. Water retention is essential to prevent the mortar from losing moisture too quickly to...
129


