在修复牙体缺损的过程中，Ⅱ类洞银汞充填体经常产生悬突，这是影响牙齿健康的一个重要因素。充填体悬突的发生率很高，对牙周组织产生严重损害。但目前我国临床医生对此尚未引起足够的重视，国内对充填体悬突的解决办法和充填体悬突发生率报道甚少[1]。在实际操作中，Ⅱ类洞充 In the process of repairing dental defects, Class Ⅱ amalgam filling bodies often produce overhang, which is an important factor affecting dental health. Overgrowth of the overloading of the high incidence of periodontal tissue serious damage. However, clinicians in our country have not paid enough attention to it at this time. There are few reports on the solution of overhang in overfill and the overhang in overfill in China [1]. In practice, Class Ⅱ hole filling