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  • Title: Effects of platelet-rich fibrin and dexamethasone on nerve regeneration after acute facial-nerve injury.
    Author: Işik ÜG, Ensari N, Sarikçioğlu L, Sonbay Yilmaz ND, Yüksel Y, Senirli RT, Yildiz M, Selçuk ÖT, Çetinkaya EA, Eyigör H, Gür ÖE.
    Journal: Acta Otolaryngol; 2023; 143(7):623-629. PubMed ID: 37452661.
    Abstract:
    BACKGROUND: Acute facial-nerve injury. OBJECTIVE: To investigate the effects of platelet-rich fibrin (PRF) and dexamethasone on nerve regeneration. MATERIALS AND METHODS: Thirty-six rats were randomly divided into six groups. Facial-nerve injury was created using a full-thickness incision in all groups except Group E. Next, primary anastomosis, PRF application, topical dexamethasone application, primary anastomosis with topical PRF and dexamethasone application, and no facial-nerve repair were performed in Groups A, B, C, D, and F, respectively. Clinical, functional, and structural improvements were evaluated at eight weeks. RESULTS: The mean eye-closure movement score in Group B was significantly higher than that in Group F (p < .001). The mean whisker-movement score in Group B was significantly higher than that in Group F (p = .001). The mean amplitude of whisker movement in Group F was significantly lower than those in Groups A, B, C, and E, and the mean amplitude in Group D was significantly lower than that in Group E (p < .001). Furthermore, an improvement in nerve ultrastructure was observed in Group B. CONCLUSION: PRF application has a positive effect on nerve recovery after anastomosis. SIGNIFICANCE: Contribute to the literature to improve nerve regeneration.
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