China Journal of Oral and Maxillofacial Surgery ›› 2021, Vol. 19 ›› Issue (5): 397-404.doi: 10.19438/j.cjoms.2021.05.003

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Effect of fibrin glue on osteogenesis and mineralization during rapid maxillary expansion

ZHAO Han-jiang1, WANG Ze-ying1, LIN Dan1, SHEN Guo-fang1,2   

  1. 1. Department of Oral and Craniomaxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011;
    2. Shanghai University of Medicine and Health Sciences. Shanghai 201318, China
  • Received:2021-03-18 Revised:2021-05-11 Online:2021-09-20 Published:2021-10-20

Abstract: PURPOSE: To investigate the effect of accelerating osteogenesis and mineralization during rapid maxillary expansion by in situ injection of fibrin glue. METHODS: In in vitro experiments, rat bone marrow stromal cells (rBMSCs) were co-cultured with fibrin glue fabricated with different concentrations of thrombin. The effects of degradation products of fibrin glue on the proliferation and osteogenic differentiation of rBMSCs were tested by CCK-8, alkaline phosphatase (ALP) staining and ALP activity quantification as well as alizarin red staining. rBMSCs were combined with fibrin glue by co-culture, two-dimensional surface culture and three-dimensional culture, respectively. Cell morphology and adhesion were observed by FITC-phalloidine fluorescence staining. In in vivo experiments, 12 6-week male SD rats were used to establish rapid maxillary expansion (RME) model with 100 g expanding force for 7 days. After 7-day expansion, they were divided into two groups: retention for 14 days as control group (R group) while in situ injection of fibrin glue combined with retention for 14 days as experimental group (R+FG group). Micro-CT scanning for three-dimensional reconstruction and analysis were conducted to compare the difference of new bone volume and bone mineral density. The osteogenesis and angiogenesis in mid-palatal suture were observed by H-E staining, Masson's trichrome staining, TRAP staining and sequential fluorescent labeling. GraphPad Prism 8.0.1 software package was used for statistical analysis. RESULTS: The degradation products of fibrin gel had little effect on cell proliferation and osteogenic differentiation of rBMSCs(P>0.05). In addition, rBMSCs cultured in three ways had great cell tractility. Compared with R group, the relative bone volume(P<0.001) and bone mineral density of trabeculae (P<0.001) were significantly increased in R+FG group. A large number of new trabeculae with higher mineralization degree were observed and the number of osteoclasts was decreased in mid-palatal suture. Mineral apposition rate was significantly accelerated in R+FG group(P<0.001). CONCLUSIONS: The degradation products of fibrin glue had no effect on proliferation and differentiation of rBMSCs. Fibrin glue could promote new bone formation, mineralized rate and inhibit osteo-clastogenesis in mid-palatal suture after RME in SD rats, which might be related to regulation of osteogenic differentiation by the surface structure of fibrin glue.

Key words: Rapid maxillary expansion, Sutural distraction osteogenesis, Fibrin glue, Bone regeneration

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