摘要牙周病是一种主要由牙龈卟啉单胞菌、螺旋体等革兰阴性致病菌导致的慢性、感染性口腔疾病，对牙周组织（包括牙龈、牙周膜、牙槽骨、牙骨质）具有慢性破坏性。目前，牙周病的治疗主要是以清除菌斑来达到控制牙周疾病的发展进程为目的。随着激光技术的发展和其在口腔临床的普及，激光在牙周病治疗方面发挥着越来越重要的作用。强激光手术和弱激光照射是常见的激光治疗方式。弱激光照射主要通过光生物刺激效应和光动力效应，促进牙周病的组织修复与再生、抑制炎症、缓解疼痛、杀菌消毒等，其在牙周病的临床治疗中具有很好的应用前景。针对弱激光照射在牙周病的治疗中的应用进行综述。

abstractsPeriodontal disease is a chronic and infectious oral disease mainly caused by gram-negative pathogens such as Porphyromonas gingivalis and spirochetes. Periodontal disease is chronically destructive to periodontal tissues including gums, periodontal ligament, alveolar bone and cementum) is chronically destructive. At present, the treatment of periodontal disease is mainly aimed at removing plaque to control the development of periodontal disease. With the development of laser technology and its popularization in dental clinics, lasers are playing an increasingly important role in the treatment of periodontal disease. Strong laser surgery and low laser irradiation are common laser treatment methods. Low-level laser irradiation mainly promotes tissue repair and regeneration of periodontal disease, inhibits inflammation, relieves pain, sterilization, etc. through photobiological stimulation and photodynamic effects. Low-level laser irradiation has a good application prospect in the clinical treatment of periodontal disease. In this paper, the application of low-level laser irradiation in the treatment of periodontal disease was reviewed.