用干髓术治疗牙髓医已有一个世纪。由于它操作简便,疗程短,故易为患者与医生所接受。但因病灶感染学说,也曾将干髓视为感染源而使用受到限制;近年,根据免疫学观点,又认为此法使用之药物砷和醛类是一种半抗原,能引起根尖周组织的免疫反应。在一些国家和地区,不仅受到反对,甚至拒用此法。然而,后牙内层解剖复杂,加上在我国口腔医师不足,设备及器械也较落后,如果对后牙牙髓炎一概强调采用活髓摘除术,是相对困难和不现实的。为了评价干髓术的疗效及价值,我们上海市四家医院共同协作,在统一检查及治疗方法;统一用药及统一疗效评定标准的前提下,对进行于髓疗法的病例,进行定期追踪 It has been a century since dry pulp has been used to treat pulp medicine. Because of its ease of operation, short course of treatment, it is easy for patients and doctors to accept. However, due to the theory of focal infection, dry marrow has also been used as the source of infection is limited; in recent years, according to immunology point of view, and that the method used in the drug arsenic and aldehydes is a hapten can cause periapical tissue Immune response. In some countries and regions, not only is it opposed to it, it is even rejected. However, the anatomy of the posterior teeth internal complex, coupled with the lack of stomatology in our country, equipment and equipment are also relatively backward, if the pulp posterior pulpitis emphasized the use of live pulp extirpation, is relatively difficult and unrealistic. In order to evaluate the efficacy and value of dry pulp surgery, we have four hospitals in Shanghai to work together to conduct regular follow-up of cases undergoing medullary therapy under the unified inspection and treatment methods;