Provided are an application of a citrate metal salt in endodontic treatment, and a formulation obtained by preparation; said citrate metal salt is used for removing a tarnished layer, and the citrate metal salt is lithium citrate, sodium citrate, potassium citrate, or magnesium citrate. The citrate metal salt is co-formulated with a citrate metal salt-compatible single-chain cationic antimicrobial agent, achieving results that are currently achieved only by alternating rinsing with EDTA-containing and sodium hypochlorite preparations in endodontic treatment.

Endodontic lubricant compositions are disclosed for use in RCT in vivo improve endodontic file longevity. Methods of using the compositions, kits containing the compositions, and manufacturing processes to create the compositions are also disclosed.

Endodontic lubricant compositions are disclosed for use in RCT in vivo improve endodontic file longevity. Methods of using the compositions, kits containing the compositions, and manufacturing processes to create the compositions are also disclosed.