Evaluation of the effects of platelet-rich fibrin, concentrated growth factors, and autologous fibrin glue application on wound healing following gingivectomy and gingivoplasty operations: a randomized controlled clinical trial.

OBJECTIVE: The aim of this study was to evaluate the effect of platelet-rich fibrin (PRF), concentrated growth factors (CGF), and autologous fibrin glue (AFG) application on early wound healing after gingivectomy and gingivoplasty operations. METHOD AND MATERIALS: In this split-mouth study, gingivectomy and gingivoplasty surgery were performed on 19 patients. The postoperative PRF, CGF, and AFG applied areas were compared with the control regions. On days 0, 7, 14, and 28, the surgical area was stained with a plaque-disclosing agent and evaluated in the ImageJ program. Wound healing was evaluated with H2O2 test, visual analog scale for pain, and Landry, Turnbull, and Howley (LTH) wound healing index on days 7, 14, and 28. The patients were asked to evaluate their esthetic perceptions on a visual analog scale. RESULTS: The amount of staining at days 7 and 14 was found to be significantly higher in the control group than in the test groups, but there was no difference between the test groups. LTH index values of the control group at days 7, 14, and 28 were found to be significantly lower than the test groups. There was no significant difference between the groups in the epithelialization assessment performed with the H2O2 test. It was observed that the use of platelet concentrate at day 7 reduced postoperative early pain. Patients were highly satisfied with postoperative esthetics. CONCLUSION: After gingivectomy and gingivoplasty operations, PRF, CGF, and AFG application were found to have positive effects on wound healing. However, PRF, CGF, and AFG applications were not superior to each other in terms of secondary wound healing.