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方法:口腔常规消毒,隔离唾液,如果唾液分泌多者,可在术前半小时,口服阿托品1片。然后将一棉球置于囊肿之上,用另一棉球蘸液氮放在口腔内棉球上。使液氮通过棉球浸透到囊肿表面,反复数次。冷冻时间一般为2分钟左右。使囊肿部形成一白色冷冻块。冷冻深度视囊肿大小而定,一般达囊肿基底部即可。术中嘱咐患者向口外呼气,将液氮雾呼出,以便手术野清楚。也可将蘸有液氮的棉球直接置在囊肿之上行浸润冷冻。术中最好采用重复冻融,即冷冻1分钟后,待其自然融化复温,然再次冷冻。临床证明
Methods: oral routine disinfection, saliva isolation, if more than the secretion of saliva, half an hour before surgery, oral atropine 1. Then put a cotton ball on top of the cyst, with another cotton ball dipped in liquid nitrogen on the cotton inside the mouth. Liquid nitrogen through the cotton ball soaked to the cyst surface, repeated several times. Freezing time is generally about 2 minutes. The cyst formed a white chilled block. Frozen depth depending on the size of the cyst, the cyst can reach the base of the general can. Surgery asked patients to breath outside the mouth, the liquid nitrogen mist exhaled, so that surgery clear. Can also be dipped in liquid nitrogen cotton directly placed on the cyst infiltration frozen. Surgery is best to use repeated freezing and thawing, that is, after 1 minute of freezing, until its natural melting rewarming, then frozen again. Clinical certificate