TEGDMA and Bisphenol-A : the same level of risk in dental medicine ?

Introduction It is legitimate to ask questions about the harmfulness of the components released from dental biomaterials like composite resins, adhesives and pit and fissure sealants. Recent studies show that monomers and co-monomers are released in solvents like water, ethanol or methanol, especially when submitting properly polymerized restorative biomaterials to stresses simulating chewing, in an effort to get closer to the clinical situation. All biomaterials do not behave in a similar manner and release different components, both in nature and in quantity. One of the co-monomers most commonly released by the composite resins, however, is TEGDMA, a co-monomer used to decrease the viscosity of the monomer forming the backbone of the composites: the Bisphenol A–diglycidylether methacrylate (Bis-GMA) (1).