电与电弧造在丢失的技术的火的比较,用于造牙杆的造牙杆协议
Víctor Hugo Gonzalo Quispe Mamani1, César Alberto Luna Castillo1, Dina Miryan Alanoca Sejje1
1Universidad César Vallejo, Facultad de Ciencias de la Salud, Escuela Profesional de Estomatología, Piura, Perú.
PloS one
|April 29, 2025
概括
电弧造 (EAC) 与火造 (TC) 相比,为牙柱提供了更高的压力强度和微观结构. 然而,EAC的运营成本较高,这对牙科专业人员来说是一个权衡.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 牙造型牙科 牙造型牙科 牙造型牙科
背景情况:
- 牙柱对于恢复经过内牙治疗的牙至关重要.
- 丢失的造是一种用于制造牙柱的常见方法.
- 电火造 (TC) 和电弧造 (EAC) 是该方法中的两个技术.
研究的目的:
- 通过TC和EAC制造的牙柱的压力强度,微观结构和成本效益进行比较.
- 评估造技术对非贵金属金 (NPG) 合金柱子的机械性能和材料特性的影响.
主要方法:
- 实验设计分析了40个NPG合金造柱 (20个技术:TC和EAC).
- 压力强度,微结构特征 (SEM),元素组成 (EDS) 和晶体相 (XRD) 的评估.
- 使用Python 3.13和蒙特卡洛模拟 (1000次代) 的成本分析.
主要成果:
- 在EAC柱上,平均压力强度显著提高 (206.102 MPa与157.207 MPa相比,以及172.625 MPa与136.303 MPa相比).
- EAC样本显示出更精细的微观结构与结晶生长,而TC样本有丰富的区域.
- 与TC (1.467个单位) 相比,EAC的运营成本 (2.181个单位) 较高,可变成本显著增加 (p < 0.001).
结论:
- 电弧造产生的牙柱具有优越的压力强度和微观结构,增强恢复耐用性.
- 火造更具成本效益,使其成为资源有限的环境中潜在的可行选择.
- 建议进一步研究耐腐蚀性和生物相容性,以充分评估临床适用性.
相关概念视频
Faraday's Law
Faraday's law state that the induced emf is the negative change in the magnetic flux per unit of time. Any change in the magnetic field or change in the orientation of the area of the coil with respect to the magnetic field induces a voltage (emf). The magnetic flux measures the number of magnetic field lines through a given surface area. Magnetic flux is estimated from the integral of the dot product of the magnetic field vector and the area vector. The negative sign describes the direction in...
DC Battery
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
Electrical Transport
The electrical transport property of a material is defined by its resistance and conductivity. Resistance is the measure of a material's ability to resist the flow of electric current, while conductivity gauges its ability to allow the current to pass through, depending on the geometry of the measurement cell, such as electrode spacing and area. Conductivity is measured in Siemens (S). There are different types of conductance, including specific conductance, equivalent conductance, and molar...
The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
Equivalent Circuits for Practical Transformers
The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
In a practical transformer, each winding exhibits resistance and leakage reactance. The winding...
In a practical transformer, each winding exhibits resistance and leakage reactance. The winding...
Circuit Breaker and Fuse Selection
A circuit breaker is a device engineered to interrupt fault currents and sometimes reclose automatically. When a fault current is detected, the breaker separates the electrical contacts, which generates an arc. This arc is extinguished by methods such as elongation, cooling, or splitting, depending on the breaker's design. Breakers are categorized based on the voltage they operate at and the medium used for arc extinction, such as air, oil, SF6 gas, or vacuum.
In high-voltage systems, circuit...
In high-voltage systems, circuit...


