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学科主题: 基础医学
题名:
Sesamin as a co-initiator for unfilled dental restorations
作者: Wang, Kemin1; Yang, Dongzhi1; Xiao, Ming1; Chen, Xiangmei2; Lu, Fengmin2; Nie, Jun1
关键词: Dental composite ; FTIR ; Mechanical property ; Polymerization ; MTT
刊名: ACTA BIOMATERIALIA
发表日期: 2009-09-01
DOI: 10.1016/j.actbio.2009.03.008
卷: 5, 期:7, 页:2508-2517
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]: ACETAL-PHOTOSENSITIZED POLYMERIZATION ; ACRYLIC BONE CEMENTS ; FREE-RADICAL POLYMERIZATION ; CYCLIC ACETAL ; AMINE ACTIVATORS ; PHOTOINITIATING SYSTEMS ; PHOTO-POLYMERIZATION ; PRIMARY CYCLIZATION ; NETWORK FORMATION ; PHOTOPOLYMERIZATION
英文摘要:

A natural component, sesamin (SA), was used to replace conventional amine as co-initiator for dental composite. A combination of camphorquitione (CQ) and SA was employed to initiate the photopolymerization of 2-2-bis[4-(2-hydroxy-3-methacryloxyprop-1-oxy)-phenyl] propane/triethylene glycol dimethacrylate (70/30 wt.%). The kinetics was recorded by real-time Fourier transform infrared spectroscopy. The mechanical properties were measured by dynamic mechanical analysis, the cell toxicity was investigated by MTT assay and a mixture of CQ and ethyl 4-N,N-dimethylaminobenzoate (EDMAB) was used as control in the same photocuring condition. The results indicated that the addition of SA as co-initiator greatly improved the rate of polymerization and final double-bond conversion (DC) when compared with the system initiated by CQ alone. Compared with EDMAB, the final DC of the CQ/SA system (71%) was slightly lower than that of CQ/EDMAB (76%); SA resulted in approximately the same storage modulus at around 37 degrees C, but a slightly higher glass transition temperature. SA produced lower yellowing effect and good in vitro biocompatibility. The water sorption and solubility for two mixtures were very close and within the range of the ISO 4049 specification. These results suggest that SA is an effective alternative co-initiator to conventional amine. The natural compound characteristics of SA make it more promising than amine in dental resin formulations. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

语种: 英语
所属项目编号: 20774010
项目资助者: National Natural Science Foundation of China
WOS记录号: WOS:000270636900016
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.bjmu.edu.cn/handle/400002259/57982
Appears in Collections:基础医学院_病原生物学系_期刊论文

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作者单位: 1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Beijing City Preparat & Proc Novel Polyme, Beijing 100029, Peoples R China
2.Peking Univ, Dept Microbiol, Hlth Sci Ctr, Beijing 100083, Peoples R China

Recommended Citation:
Wang, Kemin,Yang, Dongzhi,Xiao, Ming,et al. Sesamin as a co-initiator for unfilled dental restorations[J]. ACTA BIOMATERIALIA,2009,5(7):2508-2517.
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