Navigation-guided mandibular distraction osteogenesis: a preliminary study

Purpose: This preliminary animal study aim to evaluate the accuracy of navigation assisted distraction osteogenesis (DO) in goat’s mandible by TBNavis-CMFS navigation system.

Materials and methods: A total of 6 adult goats were included in this study. After 5 maxillary marking screws implantation and intermaxillary fixation with prefabricated occlusal splint, CT scan with 0.625 mm thickness was performed. The CT data was then transferred to the workstation of TBNavis-CMFS navigation system (Multifunctional Surgical Navigation System, Shanghai, China) to reconstruct a 3D imagine. Simulating distraction osteogenesis was planned in unilateral mandibular body for 10 mm lengthening and three dimensional measurement was carried out for each animal. An imagine-guided navigation surgery was performed for unilateral mandibular distraction osteogenesis based on the pre-operative design. Post-surgical measurement was compared statistically at the time of 3 m post-operatively.

Results: The accuracy of intra-operative registration was within 1 mm and mandible was lengthened 10.02 mm in average (9.89–10.12 mm). No significant differences were recognized of pre and post-surgical 3D measurements comparison ( P > 0.05).

Conclusions: Pre-surgical planning could be transferred to unilateral mandibular distraction osteogenesis surgery with high accuracy by using of TBNavis-CMFS navigation system.

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Jan 21, 2018 | Posted by in Oral and Maxillofacial Surgery | Comments Off on Navigation-guided mandibular distraction osteogenesis: a preliminary study
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