根管冲洗的历史1940年以前,水是最常用的根管冲洗剂,它具有作用决,价廉,并能提供润滑作用,使器械插入根管容易等优点。此后,推荐用于根管冲洗药物众多,如酸和螯合剂、蛋白溶解酶,硷性溶液、氧化剂和生理盐水等。1943年,Grossman 提出3%双氧水(H_2O_2)与5.25%次氯酸钠(NaOCl)交替使用,可产生发泡作用,此化学反应有利于从根管中去除碎屑。近来也有推荐用其它氧化剂,如Gly-Oxide,对于狭窄、弯曲的根管,更备受推崇。在无水的甘油基中含过氧化脲,有高粘性,而且甘油基在小的根管扩大时有很好的润滑作用。它没有抗菌作用;对坏死组织亦无溶解作用。NaOCl:作为根管冲洗剂已有40多年历史,价廉,可为器械扩大根管壁提供润滑作 The history of root canal irrigation Before 1940, water was the most commonly used root canal irrigation agent, which has the advantages of low cost, effective lubrication, easy device insertion into the root canal. Since then, recommended for root canal washing drugs such as acid and chelator, proteolytic enzymes, alkaline solution, oxidants and saline and so on. In 1943, Grossman proposed that 3% hydrogen peroxide (H 2 O 2) be used interchangeably with 5.25% sodium hypochlorite (NaOCl) to create a foaming effect, and this chemical reaction favors the removal of debris from the root canal. Other oxidants, such as Gly-Oxide, have recently also been recommended for the more narrowly-curved root canal. Urea peroxide in the anhydrous glycerol, high viscosity, and glycerol in the small root canal expansion has a good lubricating effect. It has no antibacterial effect; it also has no effect on necrotic tissue. NaOCl: As a root canal rinse agent for more than 40 years, it is cheap and can provide lubrication for the instrument to expand the root canal wall.