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学科主题: 口腔医学
题名:
NaF-loaded core-shell PAN-PMMA nanofibers as reinforcements for Bis-GMA/TEGDMA restorative resins
作者: Cheng, Liyuan1; Zhou, Xuegang1; Zhong, Hong1; Deng, Xuliang2; Cai, Qing1; Yang, Xiaoping1
关键词: Core-shell nanofibers ; Fluoride-ion release ; Dental resin ; Nanocomposite
刊名: MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
发表日期: 2014
DOI: 10.1016/j.msec.2013.09.020
卷: 34, 页:262-269
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]: EXPERIMENTAL DENTAL COMPOSITES ; FLUORIDE RELEASE ; POLYMERIZATION SHRINKAGE ; FIBRILLAR SILICATE ; CERAMIC NANOFIBERS ; ORIENTATION ; FILLERS ; NANOCOMPOSITE ; DENTISTRY ; WHISKERS
英文摘要:

A kind of core-shell nanofibers containing sodium fluoride (NaF) was produced and Used as reinforcing materials for dimethacrylate-based dental restorative resins in this study. The core-shell nanofibers were prepared by coaxial-electrospinning with polyacrylonitrile (PAN) and poly(methyl methacrylate) (PMMA) solutions as core and shell fluids, respectively. The produced PAN-PMMA nanofibers varied in fiber diameter and the thickness of PMMA′shell depending on electrospinning parameters. NaF-loaded nanofibers were obtained by incorporating NaF nanocrystals into the core fluid at two loadings (0.8 or 1.0 wt.%). Embedment of NaF nanocrystals into the PAN core did not damage the core-shell structure. The addition of PAN-PMMA nanofibers into Bis-GMA/TEGDMA clearly showed the reinforcement due to the good interfacial adhesion between fibers and resin. The flexural strength (Fs) and flexural modulus (Ey) of the composites decreased slightly as the thickness of PMMA shell increasing. Sustained fluoride releases with minor initial burst release were achieved from NaF-loaded core-shell nanofibers and the corresponding composites, which was quite different from the case of embedding NaF nanocrystals into the dental resin directly. The study demonstrated that NaF-loaded PAN-PMMA core-shell nanofibers were not only able to improve the mechanical properties of restorative resin, but also able to provide sustained fluoride release to help in preventing secondary caries. (C) 2013 Elsevier B.V. All rights reserved.

语种: 英语
所属项目编号: 2011AA030102 ; 2012BAI07B08 ; 51073016 ; NCET-11-0556
项目资助者: National High Technology Research and Development Program of China ; National Key Technology Research and Development Program of China ; National Natural Science Foundation of China ; Program for New Century Excellent Talents in University
WOS记录号: WOS:000330489500033
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/58622
Appears in Collections:北京大学口腔医学院_口腔修复科_期刊论文

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作者单位: 1.Beijing Univ Chem Technol, Beijing Lab Biomed Mat, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Dept Prosthodont, Beijing 100081, Peoples R China

Recommended Citation:
Cheng, Liyuan,Zhou, Xuegang,Zhong, Hong,et al. NaF-loaded core-shell PAN-PMMA nanofibers as reinforcements for Bis-GMA/TEGDMA restorative resins[J]. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,2014,34:262-269.
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