Purpose : To evaluate the clinical result of mandible reconstruction by using customized transport distraction osteogenesis.

Methods : Three cases with mandibular benign tumour were included. A customized transport distractor was designed based on the mandibular defects. Rapid prototype skeletal skull models were routinely fabricated for presurgical planning. Transport bifocal or trifocal distraction osteogenesis (DO) was performed after partial mandibulectomy. The latency period is 7 days and distraction rhythm is 0.8 mm/day. After 6 months consolidation the second operation was carried out to remove the devices.

Results : DO was performed successfully and new bone formation was 50 mm, 54 mm, 106 mm respectively. Rigid internal fixation and iliac bone graft was carried out when removing the distractor. A bilateral sagittal split osteotomy was performed to advance the reconstructed mandible to right position for denture restoration in one case.

Conclusion : Customized transport distraction osteogenesis can successfully reconstruct extensive mandible defect. However, special consideration should be paid on dock site bone healing and intermaxillary occlusal relationship during presurgical planning.