摘要作为一种改善种植体周围软硬组织稳定性的有效手段，种植体周围角化黏膜增宽术的应用日趋广泛，然而其风险因素、术式决策及关键技术原则尚缺乏深入系统讨论。本文重点介绍了当前种植体周围角化黏膜增宽术的临床常用术式；系统讨论并提出种植体周围角化黏膜增宽术外科五原则；针对常用术式，探讨了影响种植体周围角化黏膜增宽术疗效的局部解剖因素，基于风险评估提出手术决策方案，以期为此类手术的临床应用提供指导。

abstractsAs effective modalities to improve the stability of peri-implant hard and soft tissue, keratinized mucosa augmentation has increasingly been applied in daily practice. Nonetheless, there is still lack of in-depth comprehensive discussion regarding the surgical risk factors, the decision-making strategy and the surgical principle. In this article, three routine procedures of peri-implant keratinized mucosa augmentation were introduced. The surgical principles were deeply discussed and summarized with five key principles. Based on the risk assessment of local factors, the effects of which were analyzed on keratinized mucosa augmentation comprehensively, the authors proposed a decision-making protocol for selection of surgical procedures in the end, intending to provide guidelines for clinical application.