Abstract #1036

Spatial Distribution of Free Radicals in Dental Resins Using Electron Paramagnetic Resonance Imaging (EPRI)

Philippe Levque¹, Julian Leprince^2,3, Ana Maria Dos Santos-Goncalvez², Gatane Leloup², Bernard Gallez¹

¹Biomedical magnetic resonance unit, Universit catholique de Louvain, Brussels, Belgium; ²School of Dentistry and Stomatology, Universit catholique de Louvain, Brussels, Belgium; ³Laboratory of Polymer Science, Universit catholique de Louvain, Louvain-la-Neuve, Belgium

Methacrylate resins are highly popular in dentistry and are largely used in clinic for tooth restoration. Free radicals are created during the photopolymerization process and can be detected by EPR spectroscopy. EPR has been successfully used to study the mechanical properties of this material. This study focuses on the feasibility of EPRImaging using dental resins which exhibits complex signal. 2D imaging and 2D spectral spatial imaging were applied and give the unique possibility of non destructive characterization and mapping of free radicals in dentam resins and more generally in biomaterials and materials science.