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Influence of Chemical Structures of Benzodioxole-based Coinitiators on the Properties of the Unfilled Dental Resin by Suqing Shi; Pu Xiao; Kemin Wang; Yongkuan Gong; Jun Nie is a Engineering article available to read on EtoBox.

What is Influence of Chemical Structures of Benzodioxole-based Coinitiators on the Properties of the Unfilled Dental Resin about?

To investigate the influence of chemical structures of benzodioxole-based coinitiator on the initiating reactivity and the mechanical properties of cured samples for the unfilled dental resin, a mixture of 2,2-bis[4-(2-hydroxy-3-methacryloxyprop-1-oxy)phenyl]propane (bis-GMA) and triethylene glycol dimethacrylate (TEGDMA) (70/30 wt.%) was photoinduced by combinations of camphorquinone (CQ) and benzodioxole derivatives. 2-(N,N-Dimethylamino)ethyl methacrylate (DMEM) was used as control. The kinetics was monitored by a real-time Fourier transformation infrared spectroscopy (FTIR) and the dynamic mechanical analysis was performed on a dynamic mechanical analyzer (DMA). The cytotoxicity property of the cured samples was evaluated by MTT assay in vitro using VERO as reference cell lines. The results indicated that the 4-position phenyl ring substituents of the benzodioxole-based coinitiator had great influence on the initiating reactivity. Incorporating substituents with p electron acceptors in the 4-position of phenyl ring led to the decrease of the rate of polymerization (R p ) of the CQ/benzodioxole derivatives. However, the electron-donating substituents were useful to increase the

Who reads Influence of Chemical Structures of Benzodioxole-based Coinitiators on the Properties of the Unfilled Dental Resin?

Author

Suqing Shi; Pu Xiao; Kemin Wang; Yongkuan Gong; Jun Nie

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1742-7061)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)