Methods: The CDIC one-stage conical spiral-shaft implants were implanted in the missing anterior zone,after the operation, the metal porcelain crown were restorated with in 5 days.

• 方法:采用CDIC一段式锥状螺旋种植体植入前牙缺失区,术后5日内完成金属烤瓷冠修复,术后6月、12月随访,记录随访结果。