Identification of Free Radicals Generated by Different Curing Modes in a Dental Resin Cement

The polymerization process of the dual cure resin cement AllCem (FGM, Joinvile, Brazil) was investigated theoretically and experimentally. The free radicals responsible for polymerization continuity were characterized by multi-frequency EPR spectroscopy (X-, Q- and W-band) and spectra simulation. It...

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Bibliographic Details
Published in:Applied magnetic resonance 2016-09, Vol.47 (9), p.1003-1014
Main Authors: Vicentin, Bruno Luiz Santana, Netto, Antonio Marchi, Blümich, Bernhard, Di Mauro, Eduardo
Format: Article
Language:English
Subjects:
Atoms and Molecules in Strong Fields
Cement
Composite materials
Electron paramagnetic resonance
Endodontics
Free radical polymerization
Free radicals
Laser Matter Interaction
Light
Organic Chemistry
Phenols
Physical Chemistry
Physics
Physics and Astronomy
Polymerization
Propagation
Resins
Software
Solid State Physics
Spectra
Spectroscopy
Spectroscopy/Spectrometry
Spectrum analysis
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Summary:The polymerization process of the dual cure resin cement AllCem (FGM, Joinvile, Brazil) was investigated theoretically and experimentally. The free radicals responsible for polymerization continuity were characterized by multi-frequency EPR spectroscopy (X-, Q- and W-band) and spectra simulation. It was observed by multifrequency electron paramagnetic resonance spectroscopy and spectra simulation that the paramagnetic species occur simultaneously and independently for both self-cure and photo-cure modes. The paramagnetic species generating the EPR signal are the same for both photo-cure and self-cure polymerization mechanisms.
ISSN:0937-9347
1613-7507
DOI:10.1007/s00723-016-0803-7