相关实验视频

Updated: Jun 9, 2025

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

光固化时间和增量厚度对批量填充复合树脂具有明显应用系统的特性的影响

Carlos Rocha Gomes Torres¹, Taiana Paola Prado¹, Daniele Mara da Silva Ávila¹

¹Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University-UNESP, São José dos Campos, Brazil.

International journal of dentistry

|October 30, 2024

概括

增加散装填料复合树脂厚度和减少光固化时间会对微硬度和转化度 (DC) 产生负面影响. 较长的固化时间改善了直流,而更高的半透明度与更好的底部到顶部比率相关.

科学领域:

牙科材料科学牙科材料科学
聚合物化学聚合物化学

背景情况:

大量填充复合树脂由于其效率在牙科中广泛使用.
优化光固化参数对于实现适当的聚合而言至关重要.
了解增量厚度和固化时间对材料性能的影响对于临床成功至关重要.

研究的目的:

评估光固化时间和增量厚度如何影响各种散装复合树脂的微硬度和转化度 (DC).
评估这些因素对半透明度参数 (TP) 的影响.

主要方法:

四种散装复合树脂 (Filtek One,Tetric N-Ceram,SonicFill 3,VisCalor) 进行了测试. 这四种复合树脂被测试.
样本以2,4和6毫米厚度的增量进行准备.
光固化进行了10,20和40秒.
测量了Knoop微硬度,转化度 (FTIR) 和半透明度参数.

主要成果:

更高的增量厚度和更短的固化时间显著降低了微硬度 (底部/顶部比率) 和DC.
维斯卡洛和泰特里克N-Ceram显示出更高的透光度和底部到顶部比率.
SonicFill 3表现出最小的微硬度和直流,在6毫米深度出现聚合问题.
菲尔特克一号展示了最高的直流值.

结论:

增量厚度是影响散装复合材料转化程度的关键因素.
需要足够的光固化时间才能达到最佳的聚合,特别是更厚的增量.
材料的半透明度会影响光线的透,并影响底部到顶部的微硬度比.

关键词:

复合树脂是一种复合树脂.转换的程度转换的程度.治愈的深度;硬度;半透明度.

更多相关视频

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

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Application of Light-cured Dental Adhesive Resin for Mounting Electrodes or Microdialysis Probes in Chronic Experiments

Published on: July 30, 2007

相关概念视频

Setting Time of Cement

Setting Time of Cement

The setting time of cement refers to the process of cement paste transitioning from a plastic state to a solid state. This process is crucial in construction as it dictates the timeframe for concrete placement, compaction, and finishing. The onset of this solidification is termed the initial set, indicating when the paste becomes unworkable. The final set is when the paste has solidified completely, and further handling or manipulation can no longer affect its shape. The cement strength is...

Accelerated Curing of Concrete

Accelerated Curing of Concrete

Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...