Objective: This study aimed to evaluate the clinical effect of periodontal microscopic surgery on the augmentation of attached gingiva and determined the clinical principle on how to use minimally invasive surgery to improve the surgery success rate.
Methods: Twenty patients with insufficient attached gingiva around implants were selected. Periodontal microscopic surgery for free gingival graft was performed to increase the width of the attached gingiva around the implants. The survival state of the free gingiva was observed after surgery, and the width of the attached gingiva around the implants was recorded before and after surgery and 1 year after surgery. The shrinkage rate of the free gingival flap 1 year after surgery was analyzed to evaluate the stability of the flap.
Results: The flaps of the 20 cases all survived. One year after the operation, the width of the attached gingiva was (3.05±0.44) mm, which increased compared with that of preoperation (2.56±0.31) mm and decreased compared with that of postoperative day (2.13±0.28) mm. The shrinkage rate of the attached gingiva was 41.22%±5.04%.
Conclusions: The application of microscopic surgery on the augmentation surgery of attached gingiva can increase the success rate and improve the quality and quantity of attached gingiva around implants.
目的 探讨显微牙周外科技术在种植体附着龈增宽术中的临床应用效果。方法 对20例种植体周附着龈不足或缺失的患者，采用显微牙周外科技术增宽种植体周的附着龈。术后观察游离龈瓣的存活状态，并记录术前、术后即刻、术后1年时附着龈的宽度，计算术后1年附着龈的收缩率。结果 20例患者的游离龈瓣均存活，术后1年附着龈宽度为（3.05±0.44）mm，与术前相比增加了（2.56±0.31）mm，与术后即刻相比减小了（2.13±0.28）mm，附着龈收缩率为41.22%±5.04%。结论 显微牙周外科技术应用于附着龈增宽术可获得较高的成功率，能较好地提高种植体周附着龈的质量。.
Keywords: attached gingiva; dental implant; free gingival graft; periodontal microsurgery.