拔除发现４个牙根１例报告患者张××，女、３１岁。于１９９４年９月来我院口腔科要求拔除。检查：残冠，叩诊（－），牙龈无红肿、无瘘管，行右下齿槽神经阻滞麻碎，待麻醉显效后，局部消毒，先分离牙龈，因阻力太大，切开侧牙龈、剥离颊侧龈瓣，凿去颊侧部分骨板，对半... Removal of four root found in 1 patient reported Zhang × ×, female, 31 years old. In September 1994 to our hospital stomatology requirements removal. Check: residual crown, percussion (-), no swelling of the gums, no fistula, line lower right alveolar nerve block numbness, to be effective after anesthesia, local disinfection, the first separation of gums, because of resistance too large, cut side of the gums, Peel off the buccal gingival flap, chisel to the buccal side of the part of the plate, on the half ...