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对有些患者不宜使用下齿槽神经阻滞麻醉如易出血的患者注射后流血可能是危险的,小儿和精神或生理有缺陷的患者术后仍麻木的下唇或舌较易受到创伤。 在下颌一个孤立的区域如1、2个牙齿上作短时间的手术可以只麻醉1、2个牙齿不必麻醉半个下颌及下唇和舌等软组织,这时即可使用PDL注射。七十年代末在美国有2种新的局麻注射器(Peri-Press和Ligmaject)用于PDL注射。
Bleeding may be dangerous for some patients who are not advised to use inferior alveolar nerve block anesthesia, such as bleeding prone patients, who are more likely to be traumatized by postoperative numbness in their pediatric and psychiatric or physiologically deficient patients. In a separate area of the mandible, such as 1,2 teeth for a short period of surgery can only anesthesia 1,2 teeth do not have to anesthesia half of the lower lip and tongue and other soft tissue, then you can use PDL injection. In the late 1970s, two new local anesthesia syringes (Peri-Press and Ligmaject) were used in the United States for PDL injections.