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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2020, Vol. 14 ›› Issue (05): 280-287. doi: 10.3877/cma.j.issn.1674-1366.2020.05.002

Special Issue:

• Basic Science Research • Previous Articles     Next Articles

Repair of rabbit periodontal bone defect with Bio-Oss bone combined with platelet-rich fibrin

Yue Zhang1, Hongbin Dong2, Wei Zhang1, Yuan Yuan1, Yang Zhou1, Tao Guo1,()   

  1. 1. Department of Stomatology, Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, China
    2. Department of Stomatology, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
  • Received:2020-06-13 Online:2020-10-01 Published:2020-10-01
  • Contact: Tao Guo
  • About author:
    Corresponding author: Guo Tao, Email:
  • Supported by:
    National Natural Science Foundation of China(81660177)

Abstract:

Objective

To explore the effect of tissue-engineered bone Bio-Oss bone combined with platelet-rich fibrin (PRF) on repairing periodontal bone defects by examining the expression of bone morphogenetic protein 2 (BMP-2) , osteoprotegerin (OPG) and nuclear factor κB receptor activator ligand (RANKL) .

Methods

A total of 36 three-month-old male New Zealand white rabbits were divided into four groups by random number table method, i.e., Bio-Oss group, PRF group, Bio-Oss/PRF group and blank control group. For each group, there were nine rabbits. Unilateral periodontal was prepared. In the bone defect model, Bio-Oss bone, PRF and Bio-Oss/PRF composite were implanted in the bone defect, respectively, and the one without any material was used as a blank control. The animals were sacrificed at 4, 8 and 12 weeks after the operation. Gross observation, Masson staining and immunohistochemical observation of BMP-2, OPG, RANKL were performed, and the expression of the animals was analyzed by factorial design.

Results

Masson staining results showed that in the Bio-Oss/PRF group, some mature bones were observed at 8 weeks after surgery, and bone plates were formed at 12 weeks, with a high bone maturity. Factorial analysis showed that the expression of BMP-2 in the Bio-Oss group gradually increased at 4, 8 and 12 weeks, and the difference was statistically significant (F = 51.30, P<0.001) ; the expression of OPG first rose then descended, and the difference was statistically significant (F = 167.03, P<0.001) ; the expression of RANKL gradually decreased with time, and the difference was statistically significant (F = 5.39, P = 0.046) . The expression of BMP-2 in the PRF group at 4, 8 and 12 weeks was not statistically significant (F = 0.68, P = 0.544) ; the expression of OPG and RANKL decreased gradually over time, and the difference was statistically significant (FOPG = 1070.93, POPG<0.001; FRANKL = 2306.15, PRANKL<0.001) . The expression of BMP-2, OPG and RANKL in the Bio-Oss/PRF group gradually decreased at 4, 8 and 12 weeks, and the difference was statistically significant (FBMP-2 = 13.29, PBMP-2<0.001; FOPG = 237.91, POPG<0.01; FRANKL = 132.48, PRANKL<0.001) . In the blank control group, the expression of BMP-2 and OPG increased first and then decreased at 4, 8 and 12 weeks, and the difference was statistically significant (FBMP-2 = 88.33, PBMP-2<0.001; FOPG = 30.06, POPG<0.001) , while the expression of RANKL gradually decreased over time, and the difference was statistically significant (F = 56.52, P<0.001) .

Conclusion

The application of Bio-Oss bone composite PRF may promote osteogenesis and repair periodontal bone defects.

Key words: Platelet-rich fibrin, Bone morphogenetic protein 2, Osteoprotegerin, Receptor activator of nuclear factor kappaB ligand, Bio-Oss bone, Periodontal bone defect

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