Abstract
Phosphoric acid modifies peptides in demineralized dentin which collapse easily during the drying process.The collapsed demineralized dentin does not permit monomer impregnation and makes preparation of hybridized dentin difficult.Methacrylates with hydrophilic and hydrophobic groups, 2-hydroxy-3-phenoxypropyl methacrylate(HPPM), 4-methacryloyloxyethyl trimellitic acid(4-MET)and 2-methacryloyloxyethyl phenyl hydrogen phosphate(Phenyl-P), dissolved in 30% HEMA primer could restore the permeability of shrunken demineralized dentin which enhanced hybrid layer formation.As a result, hybridized dentin was prepared in a shorter period when such a HEMA primer dissolved a methacrylate with hydrophilic and hydrophobic groups was applied on the shrunken demineralized dentin.
