Abstract
A novel and biomimetic restoration method for teeth by soaking in a simulated oral environment was reported. A biocompatible polydopamine (PDA) layer was deposited on the surface of dentin via dopamine polymerization to function- alize the surface to induce deposition of hydroxyapatite crystals. The samples were characterized by means of XPS, XRD, SEM and EDS. Results show that the coating of polydopamine layer induces the growth of hydroxyl apatite crystal on dentin surface, and improve the binding force between the hydroxyl apatite layer and the dentin surface. The optimized concentra- tion of dopamine solution is 2 mg/mL for the uniform deposition of PDA layer on the dentin surface.
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