Abstract: Objective: Traumatic dental injuries often result in crown fractures, the treatment of anterior tooth trauma accompanied by combined crown-root fractures is challenging, requiring consideration of periodontal, endodontic, orthodontic, and restorative factors. Proper diagnosis & multidisciplinary treatments are important for achieving good results. Diagnosis and treatment: This case report describes the co nservative management of a large cyst-like periapical lesion in the lateral incisors of the maxilla of a 19-year-old female with the chief complaint of slightly unwell of the anterior region with no history of pain and traumatic accident 5 years ago. After root canal retreatment, periapical surgery, orthodontic traction, and periodontal surgery, the injured teeth were repaired with veneers. Results: After 8 years of follow-up, the teeth were stable. Conclusions: For the complex crown-root combined fracture case, there is no consensus of extraction and retention treatment suggestions to preserve the injured teeth taking into account the aesthetics and functionality. It is very important for dentists to preserve the injured teeth.

Key words: multidisciplinary approach, apical surgery, orthodontic traction, modified crown lengthening surgery, veneer