Digital Model-Assisted Prophylactic Stabilization for Mandibular Preservation in Recurrent Juvenile Ossifying Fibroma

Area of Science:

• Oral and Maxillofacial Surgery
• Oncology
• Biomedical Engineering

Background:

• Recurrent psammomatoid-type juvenile ossifying fibroma (JOF) of the mandible poses significant treatment challenges.
• Standard resection may compromise mandibular structural integrity and facial contour.

Purpose of the Study:

• To evaluate a mandibular preservation strategy for anterior mandibular JOF.
• To assess the efficacy of digital model-assisted prophylactic stabilization following tumor resection.

Main Methods:

• A 22-year-old female patient with recurrent anterior mandibular JOF underwent local tumor resection.
• Preoperative cone-beam computed tomography (CBCT) data were used to create a 1:1 stereolithographic mandibular model.
• The model facilitated precontouring of a reconstruction plate, screw placement planning, and drilling depth estimation.
• Intraoral tumor resection with a peripheral bony margin was performed.
• A precontoured reconstruction plate was placed via a submandibular approach for stabilization.

Main Results:

• The surgical procedure successfully preserved mandibular continuity and facial contour at 2-year follow-up.
• No recurrence of the juvenile ossifying fibroma was observed.
• No pathologic fracture or plate-related complications occurred.

Conclusions:

• Mandibular preservation combined with digital model-assisted stabilization is an effective strategy for managing recurrent anterior mandibular JOF.
• This approach ensures oncologic control while maintaining functional and aesthetic outcomes.
• Digital modeling enhances surgical planning and precision for complex mandibular reconstructions.