Journal of Inorganic Materials ›› 2016, Vol. 31 ›› Issue (1): 95-99.DOI: 10.15541/jim20150262

• Orginal Article • Previous Articles     Next Articles

Effect of Dopamine on Hydroxyapatite Deposition for Dental Restoration

XU Jin-Mei, LIU Xin-Ling, GAO Yan-Feng   

  1. (School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China)
  • Received:2015-06-02 Revised:2015-07-18 Online:2016-01-20 Published:2015-12-15
  • About author:XU Jin-Mei. E-mail:


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 functionalize 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 concentration of dopamine solution is 2 mg/mL for the uniform deposition of PDA layer on the dentin surface.

Key words: biomimetic materials, polymerization of dopamine, mineralization of teeth, crystal growth

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