Studies on navigation mandibular distractor in mandible distraction osteogenesis in goats

Abstract

Abstract: PURPOSE S: To investigate the accuracy of navigation-guided mandibular distraction ostergenesis (DO) on animal model by using TBNavis-CMFS navigation system with navigation mandibular distractors. METHODS : Five registration screws were implanted in the mandible of 4 goats under general anesthesia before scanned by computerized tomographic (CT). CT data and 3D image of navigation mandibular distractors were imported in Surgicase 5.0 and TBNavis-CMFS to design the surgery plan and predict the outcomes. Four goats were divided into 2 groups, goats in group 1 were implemented with mandibular angle osteotomy, while goats in group 2 were implemented with mandibular ramus osteotomy. Paired t test was carried out using SPSS 17.0 software package. RESULTS : With the use of navigation mandibular distractors, there was no significant difference between 3D models and real objects in size parameters (P>0.05). Mean distractor axel angle of virtual and navigated operation was 2.45° (1.56°~3.69°), mean osteotomy plane angle of virtual and navigated operation was 1.53° (1.16°~3.25°). There was no significant difference between ipsilateral condyle distance to the osteotomy plane of virtual and navigated operation (P>0.05). CONCLUSIONS : Navigation-guided mandibular DO with navigation mandibular distractors is able to transfer the pre-surgical planning to realtime surgery precisely, which can be used for mandibular DO under navigation environment clinically in future.

Key words: Goats, Distraction osteogenesis, Navigation surgery, OSAHS

CLC Number:

R782.6

XU Lei, CAI Ming, YU Wen-wen, SUN Hong-xia, WANG Meng, YAO Kan, CAI Qi-xun, WEI Si-long, LU Xiao-feng. Studies on navigation mandibular distractor in mandible distraction osteogenesis in goats[J]. China Journal of Oral and Maxillofacial Surgery, 2016, 14(1): 8-13.

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