Shanghai Journal of Stomatology ›› 2015, Vol. 24 ›› Issue (4): 442-446.

• Basic study • Previous Articles     Next Articles

In vitro study on the properties of guided bone regeneration of new type chitosan-based thermosensitive hydrogel membranes

LIANG Jie1, CUI Jun2, XU Sheng1, ZHOU Ti1, XU Wei-cheng1, XU Xin3, 4   

  1. (1.Yantai Stomatological Hospital. Yantai 264001; 2. Jinan Stomatological Hospital. Jinan 250001; 3. Department of Implantology, School of Stomatology Shandong University. Jinan 250012; 4. Key Lab of Oral Biomedicine of Shandong Province. Jinan 250012, Shandong Province, China
  • Received:2014-07-24 Online:2015-08-20 Published:2015-09-10
  • Supported by:
    Supported by Science and Technology Development Planning Project of Yantai City(2013WS248) and Science and Technology Award Program for Young and Middle-aged Scientists of Shandong Province(BS2013YY056)

Abstract: PURPOSE:To prepare chitosan/β-glycerophosphate salt (CS/β-GP) thermosensitive hydrogel membranes loaded enamel matrix proteins and detect the guided bone regeneration properties. METHODS:A newly membrane was synthesized using thermal phase inversion property of the CS/β-GP system. The membrane was synthesized and added with protein BSA. The concentration of protein was detected at different time points by enhanced protein assay kit, and the protein release curve was drawn. CS/β -GP membrane added EMPs (1.0 g) as group A, CS/β -GP (1.0 g) membrane as group B and nothing as blank control group (group C). They were co-cultured with ST2 cells. The mechanical properties of the membranes were tested in vitro, and the compatibility properties were detected by MTT method. The activity of ALP was assayed by PNPP method. The data was analyzed by SPSS 16.0 software package. RESULTS:Membranes with different concentration of CS/β -GP could release protein slowly more than 12 days, and the total quantity of the released protein increased with the concentration of the β-GP. The changes of mechanical properties of the membranes were not significant(P>0.05). The OD value of group A, B and C had statistically significant difference in the MTT test. The values of group A and B were higher than that of group C, while the value of group A was higher than that of group B (P<0.05). The activities of ALP were different in the three groups .The activities of group A and B were higher than that of the blank control group(P<0.05).The difference in expression of ALP between group A and B was also statistically significant. The expression in group A was higher than that in group B (P<0.05). CONCLUSIONS: The new type CS/β-GP membrane shows property of guided bone regeneration in vitro, which have the potentials for clinical use.

Key words: Chitosan, β-Glycerophosphate salt, Thermosensitive hydrogel, Guided bone regeneration, Bovine serum albumin, Enamel matrix proteins Shanghai J Stomatol, 2015, 24(4):442-446.

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