根向复位瓣联合游离龈移植术在种植位点增宽角化黏膜的临床应用OA

Objective:To examine the clinical application and efficacy of apically repositioned flap(ARF)combined with free gingival graft(FGG)for managing insufficient keratinized mucosa around posterior dental implants.Methods:A ret-rospective study was conducted on 20 patients who received treatment in our hospital from September 2022 to March 2025,in-volving 24 implants in the posterior teeth area.All patients had completed implant restoration and presented with inadequate width of keratinized mucosa around the implants(keratinized mucosa width<2 mm),accompanied by single or concurrent symptoms such as mucosal erythema,discomfort during tooth brushing,or high frenal attachment.ARF combined with FGG was performed on these 24 implants.Before surgery,as well as at 3 and 6 months postoperatively,the clinical parameters in-cluded keratinized mucosa width(KMW),peri-implant probing depth(PPD),gingival index(GI),modified plaque index(mPLI)were analyed,and visual analog scale(VAS)score for subjective discomfort during tooth brushing,the shrinkage rate of the grafted flaps were calculated.Results:At 3 and 6 months after FGG,all observed parameters showed statistically signif-icant changes compared with the baseline values(P<0.05):KMW increased significantly,GI and mPLI improved remark-ably,PPD decreased,and the VAS score for subjective discomfort during tooth brushing in the surgical area declined.Howev-er,there were no statistically significant differences in the above parameters between 3 and 6 months postoperatively(P>0.05).The average contraction rate of the free gingival graft flap was 49.70％at 3 months postoperatively and 50.56％at 6 months postoperatively.Conclusion:The application of ARF combined with FGG can effectively increase the width of kera-tinized mucosa around implants,improve periodontal indices,and reduce patients'discomfort during tooth brushing.