This case report aims to describe a young female patient with a class I skeletal pattern with crowding and deep over bite who was treated using a passive self-ligating bracket without extraction. This study focuses on the management of a case that begins with the determination of the patient and is accompanied by the establishment of a diagnosis based on various supporting data. After that, a treatment plan was formulated and then implemented to obtain treatment results and then comprehensively discussed based on existing theories. After 15 months of treatment, the patient's main complaint has been corrected, namely, there is no crowding in the lower anterior region and the teeth are well arranged. There were also improvements in overjet, overbite, molar and canine relationships. These results were supported by the balanced position of the incisors, normal interincisal angles, competent lips, and the ability to achieve a good anterior seal at the end of treatment. Long-term retention is recommended to improve the prognosis and stability of the treatment outcome.