[Effect of triple antibiotic paste on microorganisms in root canals of deciduous teeth].

Purpose: To analyze the effect of triple antibiotic paste on root canal microorganisms in periapical periodontitis of different stages.

Methods: Eighty-nine children with periapical periodontitis of deciduous teeth in Department of Stomatology, Children's Hospital of Nanjing Medical University from April 2017 to April 2020 were enrolled, and divided into two groups according to the clinical symptoms and root X-ray films, i.e.