从1993年下半年以来,我们在临床上应用美国3M公司生产的镍铬合金成品冠套修复222例患者的266只牙,效果满意,反映良好。 一、临床资料 近几年我们用美国3M公司出产的金属冠套快速修复上颌第一磨牙94只,第二磨牙68只,下颌第一磨牙64只,第二磨牙40只,第三磨牙2只。其中男性126例,女性96例。 二、适应症 Since the second half of 1993, we have applied the nickel-chrome finished crown cap manufactured by 3M Company in the United States to repair 266 teeth of 222 patients, with satisfactory results and good response. First, the clinical data In recent years, we use the United States produced 3M metal crown crown quickly repair the maxillary first molar 94, 68 second molar, mandibular first molar 64, 40 second molar, the third molar 2 . 126 males and 96 females. Second, indications