重力对不同浮式散装树脂复合材料的边际完整性的影响
İsmail Hakkı Baltacıoğlu1, Gülbike Demirel1, Mehmet Eray Kolsuz2
1Department of Restorative Dentistry, Faculty of Dentistry, Ankara University, 06560 Ankara, Turkey.
Medicina (Kaunas, Lithuania)
|March 28, 2024
概括
在牙科修复中,重力不会显著影响散装复合材料的边际完整性. 材料 材料 的材料.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料工程 生物材料工程
背景情况:
- 边际完整性对于牙科修复的长寿至关重要.
- 散装复合材料提供了效率,但它们在不同条件下的性能需要研究.
- 了解影响微泄漏的因素对于临床成功至关重要.
研究的目的:
- 评估重力对不同散装复合材料的边际完整性的影响.
- 为了比较各种可流动的散装填充材料在II类空洞中的微漏.
- 为了确定重力是否会影响这些修复材料的性能.
主要方法:
- 使用五种不同的散装填充复合组恢复了50个具有II类腔的人类牙.
- 修复工作经历了5000个热循环.
- 微计算机断层扫描 (micro-CT) 和酸银追踪被用来评估微泄漏.
- 双向ANOVA和Tukey测试分析了p=0.05.05的显著水平的数据.
主要成果:
- 在重力对边际完整性的影响方面没有发现统计学上显著的差异 (p > 0.05).
- 在不同的修复材料中观察到微漏的显著差异 (p < 0.05).
- 与其他测试材料相比,XTB复合材料的微泄漏率更高.
结论:
- 在II类修复中,重力对可流体散装复合材料的边际完整性没有显著的影响.
- 散装复合材料的化学成分是影响微漏的更为关键的因素.
- 临床医生在选择散装复合材料时,应考虑材料的特定特性,例如微泄漏潜力.
更多相关视频
09:41Magnet Assisted Composite Manufacturing: A Flexible New Technique for Achieving High Consolidation Pressure in Vacuum Bag/Lay-Up Processes
Published on: May 17, 2018
13.5K
09:54Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process
Published on: June 30, 2023
2.1K
相关概念视频
Flow Table Test
149
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
149
Unsoundness of Aggregate due to Volume Change
106
Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
106
Bulk Density of Aggregate
449
Bulk density refers to the mass of aggregate particles that would fill a unit volume. The concept of bulk density originates from the inability to pack aggregate particles in a manner that completely eliminates void spaces. Hence, the term bulk refers to the volume that encompasses both the aggregates and the voids. This measurement is crucial when aggregates are batched by volume and is used to convert quantities by mass to volume.
Most natural mineral aggregates, like sand and gravel,...
Most natural mineral aggregates, like sand and gravel,...
449
Plastic Behavior
196
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
196
Porosity in Cement Paste
131
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...
131
