银胺化物对牙和低矿物质质的牙膜的透性有不同的影响
Conrad Chou1, Misun Kang2, Dilworth Y Parkinson3
1Division of Pediatric Dentistry, Department of Orofacial Sciences, School of Dentistry, University of California San Francisco (UCSF), San Francisco, CA 94143, USA.
概括
银二胺化物 (SDF) 显著降低了牙裂变的透性,但没有降低矿物质质. 水平影响组织透性,为牙损和低矿物化机制提供了新的见解.
科学领域:
- 牙科生物材料科学 牙科生物材料科学
- 矿化组织研究研究
- 在牙科领域的计算建模.
背景情况:
- 牙腐烂和低矿物化显著影响牙结构和健康.
- 银胺化物 (SDF) 是一种广泛用于治疗牙损伤的药物.
- 了解SDF对牙组织的物理化学影响对于优化其应用至关重要.
研究的目的:
- 为了研究银二胺化物 (SDF) 对牙组织的物理化学作用.
- 为了将低矿物质化质和牙的透性与它们的矿物质密度和元素组成联系起来.
- 引入一种新的计算方法来测量牙组织的透性.
主要方法:
- 分析了人体牙和永久牙,有或没有体内/体外SDF治疗.
- 微型X射线计算机断层扫描用于扫描牙和牙样本.
- 生物金属 (,),和银的空间映射使用X射线光微探针进行.
- 通过孔隙微结构分析软件计算透度.
主要成果:
- 与未经处理的健全牙相比,用SDF处理的牙表现出明显较低的内在透性.
- 未经处理的牙牙表现出比健全牙牙的透性要高得多.
- SDF处理并没有显著改变严重低矿物质化质的透性.
- (Zn) 含量被确定为影响牙主要牙组织透性的重要因素.
结论:
- 已经建立了一种新的计算方法来评估牙组织的透性.
- SDF有效地降低了牙膜的透性,这表明牙停止的潜在机制.
- 由于SDF对低矿化质透性的影响有限,因此需要考虑不同的治疗方法.
- 生物金属Zn局部化在改变牙和牙面膜的透性方面发挥着作用,为病理生物学机制提供了洞察力.
相关概念视频
Magnetic Susceptibility and Permeability
1.4K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.4K
Permeability of Concrete
221
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...
221


