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学科主题口腔医学
Dynamic fatigue performance of implant-abutment assemblies with different tightening torque values
Xia, Dandan1,2; Lin, Hong1,2; Yuan, Shenpo1,2; Bai, Wei1,2; Zheng, Gang1,2
关键词Dental Implants Fatigue Testing Reverse Torque Value Preload
刊名BIO-MEDICAL MATERIALS AND ENGINEERING
2014
DOI10.3233/BME-141025
24期:6页:2143-2149
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Engineering, Biomedical ; Materials Science, Biomaterials
研究领域[WOS]Engineering ; Materials Science
关键词[WOS]CRITICAL BENDING MOMENT ; DENTAL PROSTHESES FDPS ; COMPLICATION RATES ; INTERFACE DESIGNS ; SINGLE CROWNS ; SURVIVAL ; CONNECTION ; STABILITY ; DIAMETER ; SYSTEM
英文摘要

Implant-abutment assemblies are usually subject to long-term cyclic loading. To evaluate the dynamic fatigue performance of implant-abutment assemblies with different tightening torque values, thirty implant-abutment assemblies (Zimmer Dental, Carlsbad, CA, USA) were randomly assigned to three tightening groups (24 Ncm; 30 Ncm; 36 Ncm), each consisted of 10 implants. Five specimens from each group were unscrewed, and their reverse torque values recorded. The remaining specimens were subjected to a load between 30N similar to 300N at a loading frequency of 15 Hz for 5x10(6) cycles. After fatigue tests, residual reverse torque values were recorded if available. In the 24 Ncm tightening group, all the implants fractured at the first outer thread of the implant after fatigue loading, with fatigue crack propagation at the fractured surface showed by SEM observation. For the 30 Ncm and 36 Ncm tightening groups, a statistical significant difference (p<0.05) between the unloaded and loaded groups was revealed. Compared with the unloaded specimens, the specimens went through fatigue loading had decreased reverse torque values. It was demonstrated that insufficient torque will lead to poor fatigue performance of dental implant-abutment assemblies and abutment screws should be tightened to the torque recommended by the manufacturer. It was also concluded that fatigue loading would lead to preload loss.

语种英语
WOS记录号WOS:000343005700028
项目编号2012BAI22B00 ; 2012BAI22B03
资助机构National Science and Technology support program, the People&prime ; s Republic of China
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/52059
专题北京大学口腔医学院
北京大学口腔医学院_材料检测中心
北京大学口腔医学院_口腔材料学研究室
作者单位1.Peking Univ, Sch & Hosp Stomatol, Dept Dent Mat, Beijing 10008, Peoples R China
2.Peking Univ, Natl Engn Lab Digital & Mat Technol Stomatol, Beijing 10008, Peoples R China
推荐引用方式
GB/T 7714
Xia, Dandan,Lin, Hong,Yuan, Shenpo,et al. Dynamic fatigue performance of implant-abutment assemblies with different tightening torque values[J]. BIO-MEDICAL MATERIALS AND ENGINEERING,2014,24(6):2143-2149.
APA Xia, Dandan,Lin, Hong,Yuan, Shenpo,Bai, Wei,&Zheng, Gang.(2014).Dynamic fatigue performance of implant-abutment assemblies with different tightening torque values.BIO-MEDICAL MATERIALS AND ENGINEERING,24(6),2143-2149.
MLA Xia, Dandan,et al."Dynamic fatigue performance of implant-abutment assemblies with different tightening torque values".BIO-MEDICAL MATERIALS AND ENGINEERING 24.6(2014):2143-2149.
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