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目前,牙髓失活主要采用亚砷酸和三聚甲醛作为失活剂,但亚砷酸对牙周组织有损害作用,而三聚甲醛作用缓慢,往往需要2—4周的时间牙髓方能失活。为缩短失活时间,在三聚甲醛中加入二甲亚砜有明显的镇痛、杀菌和抑菌作用,并可加快甲醛分子进入牙髓的过程。临床资料失活剂配方:三聚甲醛2克,二甲亚砜1克,1％利多卡因0.5毫升,配成糊剂备用。
At present, dental pulp inactivation mainly uses arsenious acid and paraformaldehyde as inactivators, but the arsenious acid has a detrimental effect on the periodontal tissue. However, the action of paraformaldehyde is slow, and it usually takes 2-4 weeks for dental pulp Can inactivate. In order to shorten the inactivation time, the addition of dimethyl sulfoxide in paraformaldehyde has obvious analgesic, bactericidal and bacteriostatic effects and can accelerate the process of formaldehyde molecules entering the pulp. Clinical data deactivator formula: trioxymethylene 2 g, dimethyl sulfoxide 1 g, 1% lidocaine 0.5 ml dubbed spare.