相关实验视频

Updated: Sep 15, 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

植入式固定部分假牙的CAD/CAM材料中的边际差距和螺丝松动:一个体外研究

Abdulrahman S Aldakhili, Majd A Alotaibi, Abdulmohsen Alsalman

The International journal of oral & maxillofacial implants

|July 16, 2025

概括

植入式固定部分假牙 (IS-FPD) 的材料选择至关重要. 聚乙基 (PEEK) 显示出最好的边缘适合性,而聚乙基 (PEKK) 显示出优越的螺丝稳定性,这两个因素之间没有相关性.

科学领域:

生物材料科学生物材料科学
牙科材料牙科材料
牙修复牙修复牙修复牙修复牙修复

背景情况:

材料选择对于植入式固定部分假牙 (IS-FPD) 的长期成功至关重要.
了解材料特性,边缘间隙和螺丝松动之间的关系对于优化IS-FPD设计和制造至关重要.

研究的目的:

为了比较由不同材料制造的3单元IS-FPD的边缘间隙和螺丝松动.
在各种材料组中调查边缘间隙和螺丝松动之间的相关性.

主要方法:

使用CAD/CAM技术制造了50个3个单位的IS-FPD框架,这些框架由 (Zir),- (Co-Cr), (Ti),聚乙烯基 (PEEK) 和聚乙烯基 (PEKK) 来制造.
用扫描电子显微镜测量边际差异,用数字扭矩装置评估螺丝松动.
使用SPSS进行统计分析,显著程度为P<0.05.

主要成果:

在所有物质组中观察到边际差距的显著差异 (P<.001). PEEK的边际差距最小 (67.22 ± 15.55 μm),而Co-Cr的边际差距最大 (176.87 ± 88.34 μm).
在PEKK的测试中,在骨 (0.44%±0.73%) 和前骨 (0.06%±1.40%) 支柱上,螺丝松动值是最低的.
在测试材料中,边缘间隙和螺丝松动之间没有发现显著的相关性 (P>.05).

结论:

材料选择在IS-FPDs的临床性能中起着关键作用.
PEEK材料提供优越的边际适应性,可能最大限度地减少微漏.
克材料增强了螺丝的稳定性,这对于减少假肢并发症至关重要.

关键词:

牙植入物是一种牙植入物.一个基本的框架框架.这是一个边际差距.聚乙基是一种聚乙基.聚乙基基是一种聚乙基.螺丝松动松动螺丝松动

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

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach

Published on: August 24, 2018

相关概念视频

Self-Locking Screw

Self-Locking Screw

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.

Frictional Forces on Screws

Frictional Forces on Screws

Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...