楔状缺损是牙齿颈部硬组织缓慢消耗而形成的缺损,呈“V”状,由于它的外形酷似木匠用的楔子,因而称之为楔状缺损。多见于前牙或双尖牙的唇面,以中老年患者居多,据临床统计,在60岁以上的老年人中该病的发生率高达90%以上,而且随着年龄的增长,严重程度也随之加重。 Wedge-shaped defect is a defect formed by the slow constriction of the hard tissue of the neck of a tooth. It is “V” shaped and is called a wedge-shaped defect because of its shape resembling a carpenter's wedge. More common in the anterior teeth or bicuspid labia, mostly middle-aged patients, according to clinical statistics, the incidence of the disease in older people over the age of 60 as high as 90%, and as the age increases, the severity is also With the increase.