Lubricant for root canal therapy

The invention discloses a lubricant for root canal therapy, which comprises ethylenediamine tetraacetic acid sodium salt, phytic acid, dodecyldimethylbenzyl ammonium chloride, Tween, cellulose, glycerol, germicide and water. Because the phytic acid has strong metal ion complexing capability and pH value adaptive ability, the product is easy for reaming and filing operation in the process of the root canal therapy; because the phytic acid has effects of corrosion prevention and bacterium inhibition, the stability and quality guarantee period of the product are improved; by adopting non-peroxide germicide and a pasting agent complexed by the Tween, the dodecyldimethylbenzyl ammonium chloride, the cellulose and glycerol, the surface tension and the fluidity of the product are adjusted by adjusting the proportions of all components in the pasting agent while improving the stability of the product, and the product not only can be used for syringe injection but also can be used for needle stick guide operation; and