The dental trauma in both primary and permanent dentition is a problem that affects the physical, social, and psychological well-being of the child and their parents. These traumas can occur at home, at school, through falls, blows, during play, and mistreatment. The behavior exhibited by parents or caregivers after the accident directly influences the prognosis. The aim of this study is to report the management of dental trauma in pediatric dentistry involving mixed dentition, mentioning whether the prognosis is favorable or not, based on the treatment used. The research is approved by the Ethics Committee Opinion 7,104,910. The case involves a male patient, 10 years old, with dental fractures in teeth 11 and 21, caused by a fall. An anamnesis, a clinical examination, and radiographic examination were performed. The clinical examination revealed that the patient had rigid splinting on teeth 12, 11, 21, and 22, and the imaging exam identified a periapical lesion on tooth 11. Following the diagnosis, the patient underwent endodontic treatment on tooth 11 and restorative treatment on teeth 11 and 21, with the removal of the rigid restraint. After the treatment, the patient had follow-up appointments at six and twelve months with the researchers. Through these follow-ups, it was observed that there was a regression of the periapical lesion on tooth 11, and the other teeth involved in the trauma showed periodontal and endodontic health, demonstrating the effectiveness of the treatment.