相关实验视频

Updated: May 25, 2025

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

刷牙对改性聚乙基 (PEEK) 表面性能的影响

Semsettin Yildiz¹, Bahar Tekin²

¹Department of Pediatric Dentistry, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey.

American journal of dentistry

|February 25, 2025

概括

机械刷毛增加了所有PEEK材料的表面粗度. 陶改性PEEK (C-PEEK) 和含的PEEK (T-PEEK) 具有有利的表面粗度,在刷后仍低于临床限制.

科学领域:

生物材料科学生物材料科学
牙科材料工程牙科材料工程
表面科学是一门学科.

背景情况:

聚乙基 (PEEK) 越来越多地用于牙科.
了解机械磨损对PEEK表面性能的影响对于临床寿命至关重要.

研究的目的:

在机械刷后评估纯未填充PEEK (U-PEEK) 和改性PEEK材料的表面粗度 (SR) 和表面地形 (ST).
为了比较含PEEK (T-PEEK),陶改性PEEK (C-PEEK) 和玻璃纤维增强PEEK (G-PEEK) 的耐磨性.

主要方法:

准备了40个圆盘形样本 (10毫米×2毫米) 的U-PEEK,T-PEEK,C-PEEK和G-PEEK (每一个n=10).
表面粗度 (Ra) 在定制模拟器中在机械刷毛前后使用型仪进行测量.
扫描电子显微镜 (SEM) 用于定性地表地形分析.

主要成果:

在所有PEEK组中,机械刷毛显著增加了表面粗度 (P<0.05).
在刷前和刷后,C-PEEK和T-PEEK表现出最低的表面粗度值.
G-PEEK显示了最高的表面粗度,除了G-PEEK之外的所有组都保持了SR低于0.2微米的临床可接受限度.

结论:

经过修改的PEEK材料,特别是C-PEEK和T-PEEK,与G-PEEK相比,表现出比G-PEEK更高的抗力,比G-PEEK更好地抵抗机械刷毛造成的表面粗.
这些发现为临床医生选择PEEK材料用于牙科应用提供了宝贵的指导,考虑到其磨损行为.

更多相关视频

Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins

Published on: January 17, 2025

Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers

Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers

Published on: June 30, 2018

相关概念视频

Polymer Classification: Architecture

Polymer Classification: Architecture

Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...