相关实验视频

Updated: Jun 18, 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

最近引入的计算机辅助设计和计算机辅助制造基于树脂的皇冠材料的结合强度为聚乙和

Ahmet Serkan Küçükekenci¹, Mustafa Borga Dönmez², Doğu Ömür Dede³

¹Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey.

The Journal of prosthetic dentistry

|August 2, 2024

概括

添加制造的牙树脂与减去制造的牙树脂相比,对植入物支柱的结合强度更高. 支柱材料对粘合强度的影响最小,粘合器故障最常见.

科学领域:

牙科材料科学牙科材料科学
生物材料工程生物材料工程
牙修复牙修复牙修复牙修复牙修复

背景情况:

增材和减料制造的进步为牙科假体引入了新的树脂材料.
关于这些新材料与各种植入物支柱材料的结合强度的数据有限.

研究的目的:

为了评估附加和减去制造的树脂基材料与聚乙基 (PEEK) 和 (Ti) 植入物支柱材料的剪接强度 (SBS).
为了比较不同制造技术和材料组合的性能.

主要方法:

使用添加剂 (Crowntec,VarseoSmile Crown Plus,FREEPRINT temp) 和减法 (G-CAM,breCAM.HIPC) 方法制造标本.
在特殊的表面处理和初始化后,使用通用自粘树脂水泥粘合PEEK和Ti支柱.
切割键强度测试和故障模式的分析,使用双向ANOVA和chi-squared测试.

主要成果:

与大多数减法材料相比,增材制造树脂 (特别是VarseoSmile Crown Plus) 的SBS显著更高.
breCAM.HIPC和G-CAM (减法) 显示PEEK和Ti支柱的SBS最低.
支柱材料 (PEEK与Ti) 对SBS的影响很小,而材料类型是一个重要的因素.
大多数故障是粘合剂,表明材料接口的潜在弱点.

结论:

添加制造的牙树脂通常与减去制造的牙树脂相比,在植入物支柱上具有更高的粘合强度.
支柱材料的选择 (PEEK或Ti) 对整体结合强度的影响有限.
了解故障模式对于改善基于树脂的假牙的寿命至关重要.

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

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique

Published on: July 27, 2022

相关概念视频

Crown Ethers

Crown Ethers

Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether...

Bonding and Strength of Aggregate

Bonding and Strength of Aggregate

The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...

EDTA: Chemistry and Properties

EDTA: Chemistry and Properties

Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...