深度边缘升高对不同间接树脂基复合板的断裂阻力和故障模式的影响

相关实验视频

Updated: May 7, 2026

Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation

Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation

Published on: July 21, 2014

Emine Kitin¹, Oktay Yazicioglu¹

¹Department of Restorative Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.

Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]

|September 5, 2025

概括

在间接复合材料中,深度边缘升高 (DME) 不会降低断裂阻力,但会显著改善断裂模式,从而导致更容易修复的结果. 材料的选择对长寿至关重要.

科学领域:

牙科材料科学
恢复性牙科
生物材料工程

背景情况:

基于树脂的间接复合修复广泛用于后牙.
在实现可预测的密封和长期成功方面,管理下利面临挑战.
深度边缘升高 (DME) 是一种管理深度或下准备的技术.

研究的目的:

评估深度边缘升高 (DME) 对间接树脂基复合材料的断裂阻力和断裂模式的影响.
将不同树脂复合材料的性能与DME或不使用DME进行比较.
确定DME是否会影响骨折的类型,特别是有利于恢复的结果.

主要方法:

120个提取的前经过了标准化的MOD准备,边缘低于CEJ2mm.
线条由四种树脂复合材料 (Gradia Plus,Signum Ceramis,Tescera ATL,Grandio Bloc) 制造,其中包括DME和没有DME.
修复过程中使用了水泥,进行了热循环 (5000个循环),并进行了抗断测试.
使用立体显微镜和SEM分析骨折模式;统计分析包括ANOVA和t测试.

主要成果:

完整的牙表现出最高的骨折抵抗力; 没有恢复的牙表现出最低的.
没有DME的Grandio Bloc在实验组中表现出最高的耐药性;使用DME的Signum Ceramis表现出最低的耐药性.
DME并没有显著降低材料的断裂阻力.
与非DME组相比,可修复的骨折类型的比例显著增加.

结论:

深度边缘升高是一种临床上可行的技术,可以在间接复合修复中增强骨折的修复性,而不会影响整体骨折抵抗力.
选择合适的树脂复合材料和粘合剂系统对于实现持久和成功的间接修复至关重要.
通过促进可修复的骨折改善患者的治疗结果.

关键词:

在CAD/CAM 深层边缘的升高断裂阻力间接树脂复合材料在地修复

更多相关视频

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

Published on: January 10, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

相关概念视频

Long-patch Base Excision Repair

Long-patch Base Excision Repair

Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:

Behavior of Concrete Under Compressive Load

Behavior of Concrete Under Compressive Load

Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...

Survival Tree

Survival Tree

Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a...