Evaluation of Zinc Oxide Eugenol and Iodoform-Calcium Hydroxide as Filling Materials in Primary Molar Root Canals Prepared by Rotary and Manual Files

This randomized controlled clinical trial aims to compare the clinical and radiographic outcomes of Zinc Oxide Eugenol (ZOE) and Iodoform-Calcium Hydroxide (Metapex) as root canal filling materials in primary molars prepared using either rotary or manual instrumentation techniques. Forty-four teeth from children aged 5-8 years indicated for pulpectomy will be randomly allocated into four equal groups based on the combination of instrumentation method and filling material. Clinical parameters-pain, mobility, and sensitivity-will be assessed using standardized scales, while radiographic outcomes, including root resorption and bone density, will be evaluated using Cone Beam Computed Tomography (CBCT) at baseline, 6 months, and 12 months. The study seeks to determine which obturation material and canal preparation technique yield superior healing, adaptation, and resorption compatible with the physiological process of primary tooth exfoliation. Findings are expected to inform evidence-based selection of endodontic materials and instrumentation methods in pediatric dentistry.