1997年以来,我科利用简单桩冠的桩钉、光固化树脂核、金属烤瓷冠对简单桩冠进行二次永久修复,经过1年以上的观察,效果满意。临床资料:本组26例,男11例,女15例;年龄25～55岁。本组病例均为前牙简单桩冠修复后,因塑料冠脱落、缺损、变色等要求二次永久修复。患者咬合基本正常,根 Since 1997, our company has used the pile post of simple post crown, light curing resin core and metal porcelain crown to make second permanent restoration of simple post crown. After more than one year of observation, the effect is satisfactory. Clinical data: The group of 26 patients, 11 males and 15 females; aged 25 to 55 years. This group of patients are anterior teeth simple post crown repair, due to plastic crown off, defects, discoloration and other requirements of the second permanent repair. The patient occured basically normal, root