Objective: To analyze the effect of iRoot BP Plus pulpotomy on the root development status of young permanent teeth. Methods: 60 cases of young permanent teeth trauma patients in our hospital were selected from January 2021 to January 2025, and were divided into iRoot group (n=30) and traditional group (n=30) according to the method of randomized numerical table. In the traditional group, conventional pulpotomy was performed and in the iRoot group, iRoot BP Plus pulpotomy was performed. The two groups were compared in terms of efficacy, root indexes (root length, root canal wall thickness), visual analog scale (VAS) scores, masticatory function, periodontal indexes (periodontal pocket depth (PD), gingival index (GI), sulcus bleeding index (SBI)), adverse effects, and family satisfaction. Results: The total effective rate of treatment in the iRoot group was 93.33% (28/30) compared with 70.00% (21/30) in the conventional group (P < 0.05); after treatment, the root length and root canal wall thickness increased in the iRoot group compared with the conventional group (P < 0.05); after treatment, the VAS scores and mastication scores in the iRoot group were lower than those in the conventional group (P < 0.05); after treatment, the PD, GI, and SBI were lower in the iRoot group than in the traditional group (P < 0.05); the incidence of adverse reactions was lower in the iRoot group at 6.67% (2/30) than in the traditional group at 26.67% (8/30) (P < 0.05); and the scores of tooth color, occlusion, and overall aesthetics in the iRoot group were higher than in the traditional group (P < 0.05). Conclusion: iRoot BP Plus live pulpotomy for the treatment of young permanent tooth trauma patients can promote root development, improve pain, mastication and periodontal indicators, reduce adverse reactions, and improve family satisfaction.