title: Benzodioxole derivative as coinitiator for dental resin.
abstract: OBJECTIVE
  The aim of this work was to examine whether it was possible to substitute benzodioxole derivatives for amine as coinitiators for dental application.
  
  
  METHODS
  A mixture of urethane dimethacrylate (UDMA)/triethylene glycol dimethacrylate (TEGDMA) (70/30 wt%), camphorquinone (CQ) and coinitiators was photocured. Real time Fourier Transform Infrared Spectroscopy with a horizontal sample holder was used to monitor the extent of polymerization. Dynamic mechanical analysis was performed over a temperature range from -50 degrees C to 200(o)C, with a ramping rate of 5(o)C per minute, using extension mode.
  
  
  RESULTS
  Benzodioxole derivatives as coinitiator improved the rate of polymerization and final double bond conversion of the dental resin. The cured samples showed similar properties, e.g. modulus, glass transition temperature, water sorption and solubility.
  
  
  CONCLUSIONS
  The results indicate that two benzodioxole derivatives, piperonyl alcohol (PAL) and benzodioxole (BDO), are viable alternatives to conventional amines as coinitiator. The biocompatibility of benzodioxole derivatives makes them more promising than amine in dental resin formulations.
authors: State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing, P R China.
authors: Shiji
authors: S
authors: Liu
authors: Suqing
authors: S
authors: Shi
authors: Guangyu
authors: G
authors: Hou
authors: Jun
authors: J
authors: Nie
mesh_terms: D052117:Benzodioxoles / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry* / Q000528:radiation effects; D008027:Light; D044367:Phase Transition; D012995:Solubility; D017550:Spectroscopy, Fourier Transform Infrared; D013729:Terpenes / Q000737:chemistry; D044366:Transition Temperature; D017155:Wettability
chemical_list: D052117:Benzodioxoles; D003188:Composite Resins; D013729:Terpenes; C048339:camphoroquinone