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Nd：YAG激光具有组织穿透深度大、血液凝固效果佳、杀菌效果好等特点，用于牙周病治疗时可快速控制炎症，促进新附着形成，具有广泛的应用前景。本文就Nd：YAG激光对牙周组织各部分的影响以及临床应用的研究进展作一综述。“,”Nd:YAG laser has the advantage of deep tissue penetration, good hemostasis effect and sterili-zing effect. It is widely used in periodontal treatment because it can control inflammation and promote periodontal tissue attachment formation. This review summarizes the application and effects of Nd:YAG laser in the treatment of periodon-tal diseases.