Pathological fracture of the mandible caused by radicular cyst: A case report and literature review.

RATIONALE

Pathological fracture of the mandible caused by radicular cyst is rare. This report describes a unique case of a mandibular pathological fracture caused by radicular cyst, arising from an endodontically treated molar.

PATIENT CONCERN

A 49-year-old female was referred to our department with persistent pain in left mandibular angle, accompanying with restricted mouth opening and malocclusion.

DIAGNOSE

An orthopantomograph (OPG) showed a unilocular lesion with a relatively well-defined border, and the lesion was associated with a fracture in the inferior border of the mandible.

INTERVENTION

This patient was treated through curettage of the cyst combined with open reduction and internal fixation of the fracture.

OUTCOMES

At the 1-year follow-up visit, the patient did not have any complaints, and the radiographs indicated the consolidation of the fracture without recurrence of cyst.

LESSONS

This case report highlights the routine follow-up of endodontically treated teeth in order to check for apical healing and detect the cystic change at early stages.