Silk fibroin scaffold for repair of buccal mucosa defects
Wang Zhong-chao
Fan Li-yuan
Cai Wei
Jiang Jun-qiang
Abstract：BACKGROUND:Fibroin is a natural macromolecular material with Arg-Gly-Asp peptide structure that is a special tripeptide structure closely related to cel adhesion, and it can promote cel migration, adhesion, and proliferation and influence cel morphology and function. OBJECTIVE:To compare the effects of different silk fibroin scaffolds to repair buccal mucosa defects in rats. METHODS:Ninety Sprague-Dawley rats were selected to make unilateral buccal mucosa defect models, and randomly divided into three groups, 30 rats in each group: porous silk fibroin scaffold was implanted into the buccal mucosa defect in experimental group, multi-layered crosslinked silk fibroin film was implanted into the buccal mucosa defect in control group, and vaseline gauze was used to cover the buccal mucosa defect folowed by suturing in blank control group. After 15 days, wound diameter was detected; after 30 days, bone defect tissues were taken for hematoxylin-eosin staining. RESULTS AND CONCLUSION:At postoperative 15 days, the wound diameter was significantly smaler in the experimental group than the control and blank control groups (P < 0.05), as wel as smaler in the control group than the blank control group (P < 0.05). Hematoxylin-eosin staining showed that at 30 days after operation, there were more epithelial spikes and fibroblasts, but less inflammatory cels in the experimental group than the other two groups (P < 0.05), and fibroin fibers were partialy absorbed and degraded in the experimental group. These findings indicate that porous silk fibroin scaffold for buccal mucosa defect repair can accelerate epithelialization and wound healing.
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Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1738-1744 )