Applying computer techniques in repairing mild mandibular asymmetry with high-density porous polyethylene.

OBJECTIVE

The purpose of this study was to explore a new method to repair mild mandibular asymmetry using computer-aided design technique.

METHODS

Medical three-dimensional image reconstruction and mirror technique were applied to design individual Medpor implant before operation. A surgical procedure was performed in 9 patients with mild mandibular asymmetry according to the preoperative planning. The Medpor implants in the body were displayed using surface rendering technique after operation, and the postoperative evaluation was performed using matching technique.

RESULTS

All the patients had an ideal clinical outcome, with no complications. Virtual images from preoperative design and postoperative three-dimensional images were registered and superimposed onto each other. The percentage of matching was 87.6% to 96.8% with an average of 93.8%±2.4%.

CONCLUSIONS

The computer techniques play an important role in repairing mandibular asymmetry and will be used widely in craniofacial surgery.