基于树脂的根管密封剂和使用MicroCT,薄膜厚度和溶解度的最新生物陶基根管密封剂之间的比较分析
Amira Galal Ismail1, Manar M Galal1, Tamer M Hamdy1
1Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza, Dokki, 12622, Egypt.
Journal of oral biology and craniofacial research
|February 2, 2026
概括
与基于树脂的密封剂相比,生物陶根管密封剂的密封质量优越,显示出更少的空隙和更薄的薄膜厚度. AH Plus生物陶密封剂表现最好,空隙集中在根运河的冠状三分之一.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
背景情况:
- 根管密封剂对于内牙治疗的成功至关重要.
- 评估密封器性能对于优化堵塞技术至关重要.
- 新型生物陶密封剂比传统的树脂基材料具有潜在的优势.
研究的目的:
- 为了比较生物陶密封剂 (Fill Root ST,AH Plus Bioceramic) 与基于树脂的密封剂 (ADseal) 的密封质量,使用单塞技术.
- 为了评估微CT空洞分析,薄膜厚度和评估的根管密封剂的溶解性.
主要方法:
- 在人工根管模型上进行了微CT空洞分析.
- 根据标准的物理分析协议进行了薄膜厚度和可溶性测试.
- 统计分析包括ANOVA和Tukey的后期测试用于组比较.
主要成果:
- 在AH Plus生物陶密封剂中,运河空隙百分比最低 (5.70%),其次是填充根ST和ADseal.
- 空洞形成在冠状三分之一最高,在根通道的顶端三分之一最低.
- AH Plus生物陶密封剂表现出最薄的薄膜厚度 (19.3微米),明显优于Fill Root ST (42.7微米) 和ADseal (81.7微米).
结论:
- 基于生物陶的密封剂 (Fill Root ST和AH Plus生物陶) 在减少空隙形成和实现更薄的薄膜厚度方面明显优于ADseal.
- 根管系统内的空隙分布受密封体类型和位置的影响,冠状三分之一受影响最大.
- AH Plus生物陶密封剂显示了改善根管密封质量的有希望的结果.
相关概念视频
Primary and Secondary Growth in Roots and Shoots
60.5K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
60.5K
Root Mean Square
3.8K
If in an experiment, data values have a probability of being both positive and negative, neither the arithmetic mean, the geometric mean, nor the harmonic mean can be used to calculate the central tendency of the data set. In particular, if the positive and negative values are equally likely, the arithmetic mean is close to zero.
For example, consider the velocity of gas molecules in a container. The gas molecules are moving in different directions, which might impart positive and negative...
For example, consider the velocity of gas molecules in a container. The gas molecules are moving in different directions, which might impart positive and negative...
3.8K
Properties of the Root Locus
307
The root locus method is an invaluable tool for analyzing higher-order systems without needing to factor the denominator of the transfer function. A pole of the system is identified when the characteristic polynomial in the transfer function's denominator equals zero.
To determine if a point lies on the root locus, the criterion involves the sum of angles contributed by all poles and zeros to that point. Specifically, this sum must be an odd multiple of 180 degrees. The gain at any point on...
To determine if a point lies on the root locus, the criterion involves the sum of angles contributed by all poles and zeros to that point. Specifically, this sum must be an odd multiple of 180 degrees. The gain at any point on...
307
Root-Locus Method
514
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
This system can be represented by a block...
514
Construction of Root Locus
418
The construction of a root locus involves several key steps to analyze and visualize the behavior of a system's poles with varying gain. The number of branches in the root locus equals the number of closed-loop poles and is symmetrical about the real axis.
For positive gain values, the root locus exists on the real axis to the left of an odd number of finite open-loop poles or zeros. The root locus starts at the open-loop poles and traces the paths of the closed-loop poles as the gain...
For positive gain values, the root locus exists on the real axis to the left of an odd number of finite open-loop poles or zeros. The root locus starts at the open-loop poles and traces the paths of the closed-loop poles as the gain...
418
Plotting and Calibrating the Root Locus
472
Root loci often diverge as system poles shift from the real axis to the complex plane. Key points in this transition are the breakaway and break-in points, indicating where the root locus leaves and reenters the real axis. The branches of the root locus form an angle of 180/n degrees with the real axis, where n is the number of branches at a breakaway or break-in point.
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...
472


