楔状缺损是牙颈部的牙齿硬组织缓慢消耗而致的缺损,是临床上常见的多发病。我们于80年6-10月检查了500名16岁以上的初诊病人,其中346名患有楔状缺损。检查方法主要依靠视诊和探诊。除并发根尖病外,一般未作X 线摄片检查。对缺失牙以及滞留乳牙均未列 Wedge-shaped defect is a defect caused by the slow consumption of dental hard tissue of the cervical and cervical teeth, which is a common and frequently-occurring disease in clinical practice. In June-October of 1980, we examined 500 newly diagnosed patients over the age of 16, of whom 346 had a wedge-shaped defect. Inspection methods rely mainly on the diagnosis and exploration. In addition to concurrent root tip disease, the general did not make X-ray examination. Lack of teeth and retention of deciduous teeth are not listed