West China Journal of Stomatology ›› 2017, Vol. 35 ›› Issue (5): 506-509.doi: 10.7518/hxkq.2017.05.012

• Orginal Article • Previous Articles     Next Articles

Experimental study on accelerated healing of jaw fracture using gelatin sponge compound growth factor

Yan-feng Tang1(), Jianlin Chen2, Yunbiao Zhou1()   

  1. 1. Dept. of Oral and Maxillofacial Surgery, Baotou Central Hospital, Baotou 014040, China
    2. Dept. of Stomatology, Lingwu People’s Hospital, Lingwu 750400, China
  • Received:2016-12-08 Revised:2017-03-09 Online:2017-10-01 Published:2017-10-01
  • Supported by:
    Science and Technology Development Programs of Yinchuan, Ningxia Province (2008061).

Abstract:

Objective To explore the role and mechanism of drug delivery systems using growth factor combined with gelatin sponge on accelerating the healing of jaw fracture and to seek better treatment of accelerating the maxillofacial fracture. Methods About 100 μg recombinant human bone morphogenetic protein (BMP)-2 was completely dissolved in 1 mL recombi-nant bovine basic fibroblast growth factor (bFGF), and the solution (40 μL) was dropped in gelatin sponge (0.5 cm×0.5 cm×1.0 cm). Then, it was freeze dried and prepared into bFGF/BMP/gelatin sponge delivery systems. The mandibular fracture model on two sides were prepared in 12 New Zealand rabbits and randomly divided into two groups. The left side was the control group, which was only fixed with titanium plates. The right side was the experimental group, in which bFGF/BMP/gelatin sponge delivery systems were put under the titanium plates. General observation, X-ray, and histological examination were taken at 2, 4, and 12 weeks after surgery. Results After 2 weeks, more fibrous tissues were seen between the fracture ends in the experimental group than in the control group. After 4 weeks, fibrous fracture callus were seen in the fracture gap in the experimental group. The ingrowths of fibrous tissue and blood vessels were seen in the control group. The fracture healing of the experimental group was significantly faster than the control group at 2 and 4 weeks. After 12 weeks, the experimental and control groups all healed completely. Conclusion bFGF/BMP/gelatin sponge can accelerate and improve fracture healing; thus, it has better clinical application prospect.

Key words: jaw, fracture healing, basic fibroblast growth factor, bone morphogenetic protein-2, gelatin sponge

CLC Number: