Figs 2A to F.
(A) Preoperative intraoral periapical radiograph; (B) Intraoral periapical radiograph determination of working length; (C) Intraoral periapical radiograph of 21 filled with triple antibiotic paste; (D) Permanent restoration is done with glass ionomer cement; (E) Intraoral periapical radiograph after 6 months; (F) Immediate intraoral periapical radiograph root canal is completely filled with MTA