非龋性颈部缺损（non-carious cervical lesions）在人群中患病率较高，不仅影响患牙的美观和功能，还可导致牙本质敏感、牙髓炎等严重后果。目前公认的主要病因有机械磨损、n 因素、酸蚀等，其治疗方案的选择需结合病因、缺损大小、部位、患者症状、有无牙龈退缩等因素后确定。n “,”Non-carious cervical lesion is a common dental disease, which not only affects the aesthetic and function of the teeth, but also leads to dentin sensitivity, pulpitis and other consequences. The main causes of lesions are abrasion, abfraction, acid erosion and so on. The treatment design should depend on the etiology, defect size, location, symptoms and presence or absence of gingival recession.