不同线程配置对水友植入物稳定性的影响. 一个分口RCT
Pablo Pádua Barbosa1,2, Vithor Xavier Resende de Oliveira1, João Vitor Goulart1
1Dental School, Universidade Federal de Uberlândia-UFU, Uberlândia, Minas Gerais, Brazil.
Brazilian dental journal
|March 27, 2024
概括
与只有穿孔线的植入物相比,使用组合穿孔线和凝结线的混合植入物显示出优越的初级和二级稳定性. 这一发现对于提高牙科植入物成功率至关重要.
科学领域:
- 牙科植入物学 牙科植入物学
- 生物材料科学 生物材料科学
- 生物机械工程 生物机械工程
背景情况:
- 牙植入物稳定性对于成功的骨整合和长期功能至关重要.
- 线程设计和表面修改显著影响植入物初级和二级稳定性.
研究的目的:
- 为了比较两种混合植入物设计的初级和二级稳定性,具有不同的线程配置.
- 评估混合线与穿孔线对90天内植入物稳定性的影响.
主要方法:
- 一个分裂口腔随机对照试验,涉及20名部分牙大的患者.
- 使用了两种具有水友表面的圆柱形渐变型植入物:一种具有穿孔线 (CTP),另一种具有混合线 (CTH).
- 使用插入扭矩和共振频率分析 (ISQ) 评估植入物稳定性,在安置时和手术后7,28,56和90天.
主要成果:
- 与CTP组相比,CTH组的植入物表现出明显更高的初级稳定性,这可以通过更高的插入扭矩和放置时的ISQ值来证明.
- 在所有随访期 (7,28,56和90天) 中,CTH组始终表现出更高的ISQ值.
- 混合植入物与合并的穿孔和凝结线显示出比只有穿孔线的植入物更好的稳定性.
结论:
- 混合植入物包括穿孔和凝结线,在部提供卓越的初级和二级稳定性.
- 由于增强的骨整合和机械互锁,CTH植入物设计可能会提供更好的临床结果.
- 这项研究强调了先进线程配置在优化牙植入物性能方面的重要性.
相关概念视频
01:26Regulation of Water Output
The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...
01:21Multiple Pipe Systems
Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
01:24Rapidly Varying Flow
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
01:28Bioreactor Controls-I
Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...
01:18Bioreactor Controls-II
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...