Objective To explore the effect of iRoot BP Plus in pulpotomy of young permanent teeth on the function of affected teeth and dental aesthetics. Methods A total of 74 patients with dental traumatic crown fracture with pulp exposure who underwent pulpotomy of young permanent teeth in Xianghe People's Hospital from May 2021 to May 2024 were selected as the research subjects. According to the random number table method, they were divided into the control group and the observation group, with 37 patients in each group. The control group received pulpotomy with TheraCal LC, and the observation group received pulpotomy with iRoot BP Plus. The function of affected teeth, dental aesthetics, surgical-related indexes and adverse reaction rate were compared between the two groups. Results The comfort score in the observation group was higher than that in the control group (P <0.05). There were no significant differences in the scores of fixation function, masticatory function and language function between the two groups (P >0.05). The integrity of the restoration, staining condition and margin adaptation condition in the observation group were all better than those in the control group (P <0.05). The pain duration, swelling duration and operation time in the observation group were all shorter than those in the control group (P <0.05). The incidence of adverse reactions in the observation group (2.70%) was lower than that in the control group (21.62%) (P <0.05). Conclusion The application of iRoot BP Plus in pulpotomy of young permanent teeth can effectively improve the function of affected teeth, enhance the dental aesthetics, help to accelerate the postoperative recovery speed of patients, and the incidence of adverse reactions after restoration is low, which is worthy of clinical application.