This study will evaluate the clinical and radiographic outcomes of rotary versus manual pulpectomy in children with irreversible pulpitis.A single-visit pulpectomy will be performed for all patients. Participants will be allocated to rotary instrumentation using Fanta AF Baby files or manual step-back instrumentation with K-files. Canals will be irrigated with 17% EDTA and 1% sodium hypochlorite, obturated with Metapex, and restored with glass ionomer cement and stainless-steel crowns. Primary outcomes will assess clinical success at 3, 6, 9, and 12 months, while secondary outcomes will evaluate postoperative pain and radiographic success at 6 and 12 months.