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对于拔牙手术中发生的断根,尤其是根尖1/3折断,我们过去都采用一般教科书中所介绍的取出方法,即以根尖挺,由断面一侧逐渐挺松,再用根尖钳取出。但在实际操作中,往往由于经验不足,特别是后牙,因为位置深,再加上齿槽窝渗血,视线不清,器械难以进入,使术者甚感不便。取一个断根所费时间往往超过拔牙手术时间许多倍,对齿槽骨的损伤也较大,给患者带来很多痛苦。1962年来,我们对10余例拔牙断根试用以弧形探针(或扩
For root extraction surgery occurred in the root, especially the apical 1/3 off, we have used the general method of textbooks introduced in the removal method, that is, apex, gradually from the side of the very loose, and then remove the apical forceps . However, in practice, often due to lack of experience, especially the posterior teeth, because of the deep position, coupled with alveolar fossa oozing, blurred vision, difficult to enter the instrument, so that the surgeon was very inconvenient. Take a root out of time is often more than many times the time of extraction surgery, the damage to the alveolar bone larger, to patients with a lot of pain. In 1962, we have used more than 10 cases of extraction probe to probe the arc (or expansion probe