Effects of Platelet-rich Fibrin on the Width of Keratinized Gingiva and Gingival Soft Tissue Augmentation after Tooth Extraction
Objective To explore the effect of platelet-rich fibrin(PRF)on the width of keratinized gingiva and gingival soft tissue increment after tooth extraction.Methods Patients(90 cases)who underwent tooth extraction in author's hospital from December 2020 to December 2021 were selected as the research subjects,and they were divided into control group(45 cases)and observation group(45 cases)by random number table method.After tooth extraction,the extraction socket was filled with fresh blood clot in the control group,and the PRF clot was used in the observation group.The mucosal healing time of the tooth extraction wound area and healing rate,mucosal color grade,swelling degree grade,visual analogue score(VAS)at 3 and 7 days after surgery were compared between the two groups.The keratinized gingival width and gingival soft tissue increment were compared between the two groups before and 6 months after surgery.The random walk model was used to evaluate the effect of PRF application on the above indicators of patients.The postoperative complications were compared between the two groups.Results After operation,the mucosal healing time in the observation group was significantly shorter than that in the control group(P＜0.05).At 3 and 7 days after operation,the mucosal healing rate in the observation group was significantly higher than that in the control group,and the mucosal color grading,swelling degree grading,and VAS score were significantly lower than those in the control group(P＜0.05).At 6 months after operation,the width of keratinized gingiva in the two groups was significantly higher than that before operation,and the increment of gingival soft tissue was significantly lower than that before operation,and the width of keratinized gingiva and the increment of gingival soft tissue in the observation group were significantly lower than those in the observation group(P＜0.05).The results of the random walking model showed that the postoperative VAS score and keratinized gingival width of the observation group were significantly improved,and the observation group could maintain the relative stability of the gingival soft tissue increment.The incidence of postoperative complications in the observation group was significantly lower than that in the control group(P＜0.05).Conclusion The application of PRF after tooth extraction can promote the healing of the mucosa in the extraction wound,relieve postoperative pain,and maintain the width of the keratinized gingiva and the increment of the gingival soft tissue.
tooth extractionplatelet-rich fibrinkeratinized gingival widthgingival soft tissue incrementrandom walk model
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