论文部分内容阅读
楔状缺损(wedge-shaped defect,WSD)是指在某些因素长期作用下牙颈部的硬体组织逐渐丧失,形成由两个光滑斜面组成的楔形缺损[1]。它是口腔门诊最常见的牙颈部非龋性疾病之一,在人群中的发病率较高,且罹患率与严重程度均随年龄而增长。
Wedge-shaped defect (WSD) refers to the wedge-shaped defect formed by two smooth slopes [1]. It is one of the most common dental caries non-carious diseases in the oral clinic, with a high prevalence in the population and an increase in attack rate and severity with age.