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Citrate Metal Salt Endodontic Treatment Formulation Patent

USPTO granted patent US12605305B2 to Kunming Qingcheng Healthcare Tech LTD. on April 21, 2026, covering an application of citrate metal salt in endodontic treatment and its formulation. The patent claims use of lithium citrate, sodium citrate, potassium citrate, or magnesium citrate for removing smear layer in root canal procedures, co-formulated with a citrate metal salt-compatible single-chain cationic antimicrobial agent. The invention is classified under CPC codes A61K 6/52 and A61K 6/69, with 8 claims total. Filing date was July 19, 2021, under application number 18025339.