用有表层组织凝固坏死膜窄等特征的CO_2激光,假若不接触牙髓组织而能凝固止血的话,那末能否在无菌,而且不加外力的情况下做活髓切断术。对此,我们把激光刚照射后所看到的牙髓变化,进行了病理组织学方面的研究。选用成年狗为实验动物,在戊巴比妥全麻 With surface tissue coagulation necrosis membrane narrow features such as CO_2 laser, if not contact the pulp tissue and coagulation hemostasis, then whether sterile, and without external force to do the case of pulpotomy. In this regard, we have seen the laser just after the changes seen in the pulp, the histopathological aspects of the study. Selection of adult dogs for experimental animals, anesthesia in pentobarbital