在严重曲的运河中,使用微型计算机断层扫描来评估三个单档系统的顶峰运输和集中能力
Seyed Mohsen Hasheminia1, Samaneh Soltani2, Fateme Mohamadian3
1Department of Endodontics, Dental Materials Research Center Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
Dental research journal
|March 13, 2024
概括
与HyFlex EDM和EdgeFile X1.1相比,One Curve在曲的根通道中显示出较少的顶端传输. 集中能力有所不同,EdgeFile X1在冠状三分之一的性能下降.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科材料科学 牙科材料科学
- 生物材料是一种生物材料.
背景情况:
- 在曲的运河中进行根运河准备,在维护运河解剖学方面存在挑战.
- 顶端运输和集中能力是成功内牙治疗的关键参数.
- 新型 - 旋转系统不断开发,以提高制备效率和安全性.
研究的目的:
- 为了比较三种不同的-旋转系统的顶峰运输和集中能力:One Curve,HyFlex EDM和EdgeFile X1.
- 为了评估这些系统在下第一个牙的曲的牙口腔和牙口腔道的性能.
主要方法:
- 一项体外研究涉及60个下第一个牙与模拟的道曲率.
- 使用One Curve,HyFlex EDM或EdgeFile X1系统准备了根通道.
- 微型计算机断层扫描 (micro-CT) 用于评估从仪器仪表之前和之后的顶峰到多个层次的顶峰运输和集中能力.
主要成果:
- 与其他系统相比,OneCurve在顶部距离1毫米处显示出明显较低的顶峰运输.
- 在距离顶点3毫米处的HyFlex EDM显示出明显更高的顶峰传输.
- 在距离顶部1,3和5毫米处的中心能力没有发现显著差异,但EdgeFile X1在7毫米处的中心能力显著降低.
结论:
- 一个曲线表现出优越的性能,最大限度地减少了曲线根通道的顶端三分之一的顶端运输.
- 系统之间的集中能力有所不同,EdgeFile X1在冠状部分的性能下降.
- 仪器仪表系统的选择可以影响在准备过程中保持根管形态.
更多相关视频
相关概念视频
Distributed Loads: Problem Solving
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
Power System Three-Phase Short Circuits
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
Multimachine Stability
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
Typical Model Studies
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
Levels of Use of a GIS
Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...


