残髓炎是口腔内科中经过牙髓治疗后最常见的并发症,一般多发生在后牙,尤以磨牙多见,且残留的牙髓多在根管较深处。从1898年Gysi提出用含多聚甲醛、三甲酚的糊剂进行干髓治疗以来,国内外采用干髓术治疗牙髓病的历史已经超过一百年,虽然干髓术简单易行,但是迄今为止并未看到经过干髓术治疗后的牙齿有组织学愈合的充分证据。由于此种术式的局限性,才造成了现今残髓炎的发病率居高不下。随着 Myelitis is the most common complication after endodontic treatment in oral medicine. It usually occurs in posterior teeth, especially in molars, and the residual pulp is often deeper in the root canal. Since Gysi proposed dry-marrow treatment with paraformaldehyde and tricresyl-containing paste in 1898, the history of using pulp marrow for treating endodontic disease has been over one hundred years at home and abroad. Although dry-band surgery is simple and easy, So far did not see after dry pulp surgery histological healing of sufficient evidence. Because of this surgical limitations, it caused the current incidence of residual myelitis high. along with