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学科主题: 口腔医学
题名:
Improved performance of Bis-GMA/TEGDMA dental composites by net-like structures formed from SiO2 nanofiber fillers
作者: Wang, Xiaoyan1; Cai, Qing2,6; Zhang, Xuehui3; Wei, Yan1; Xu, Mingming1; Yang, Xiaoping2; Ma, Qi1; Cheng, Yali4; Deng, Xuliang1,5,6
关键词: Silicon dioxide nanofibers ; Dental composites ; Wear resistance ; Polymerization shrinkage
刊名: MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
发表日期: 2016-02-01
DOI: 10.1016/j.msec.2015.10.044
卷: 59, 页:464-470
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Materials Science, Biomaterials
研究领域[WOS]: Materials Science
关键词[WOS]: RESIN COMPOSITES ; RESTORATIVE COMPOSITE ; MECHANICAL-PROPERTIES ; SURFACE-TREATMENT ; 3-BODY WEAR ; REINFORCEMENT ; NANOCOMPOSITES ; NANOPARTICLES ; FRACTION ; WHISKERS
英文摘要:

The major objective of this study was to explore the effects of silicon dioxide (SiO2) nanofibers on the performance of 2, 2-bis-[4-(methacryloxypropoxy)-phenyl]-propane (Bis-GMA)/tri-(ethyleneglycol) dimethacrylate (TEGDMA) dental composites. At first, the mechanical properties of Bis-GMA/TEGDMA (50/50, w/w) resins containing different contents of SiO2 nanofibers were evaluated to identify the appropriate composition to achieve the significant reinforcing effect. Secondly, optimized contents (5 or 10 wt.%) of SiO2 nanofibers were mixed into resins together with SiO2 microparticles, which was 60 wt.% of the resin. Controls for comparison were Bis-GMA/TEGDMA resins containing only SiO2 microparticles (60 wt.%) or with additional SiO2 nanoparticles (5 or 10 wt.%). Properties including abrasion, polymerization shrinkage and mechanical properties were evaluated to determine the contribution of SiO2 nanofibers. In comparison with SiO2 nanoparticles, SiO2 nanofibers improved the overall performance of Bis-GMA/TEGDMA composite resins, especially in improving abrasion resistance and decreasing polymerization shrinkage. The explanations were that one-dimensional SiO2 nanofibers were able to shield particular fillers from being abraded off, and able to form a kind of overlapped fibrous network to resist polymerization shrinkage. With these approaches, SiO2 nanofiber-containing Bis-GMA composite resins were envisioned a promising choice to achieve long-term durable restorations in clinical therapies. (C) 2 015 Elsevier B.V. All rights reserved.

语种: 英语
所属项目编号: 51373016 ; 81425007 ; Z121100005212007 ; ZDZH20141001001
项目资助者: National Natural Science Foundation of China ; Beijing Municipal Science &amp ; Technology Commission ; Beijing Municipal Commission of Education
WOS记录号: WOS:000367107400056
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内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/67427
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Peking Univ, Dept Geriatr Dent, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
2.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
3.Peking Univ, Dept Dent Mat, Sch & Hosp Stomatol, Beijing 100081, Peoples R China
4.Peking Univ, Clin Div 1, Sch & Hosp Stomatol, Beijing 100034, Peoples R China
5.Natl Engn Lab Digital & Mat Technol Stomatol, Beijing 100081, Peoples R China
6.Peking Univ, Beijing Lab Biomed Mat, Sch & Hosp Stomatol, Beijing 100081, Peoples R China

Recommended Citation:
Wang, Xiaoyan,Cai, Qing,Zhang, Xuehui,et al. Improved performance of Bis-GMA/TEGDMA dental composites by net-like structures formed from SiO2 nanofiber fillers[J]. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,2016,59:464-470.
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