Three-Dimensional Analysis of the Hyoid Bone Configuration Changes in relation to Dentoalveolar Discrepancy using CBCT.

Abstract

Aim: to evaluate the spatial pattern of hyoid bone in relation to dimensional morphologic changes in relation to the dentofacial discrepancy.

Methods: All CBCT images of 1120 patients archive in private clinic orthodontics unit were categorized within age between 16 to 30 years old in-between normal occlusion and malocclusion. Then, every CBCT image was analyzed according to Steiner's analysis using cephalometric reference planes and points. Finally, 3D reconstructive model of hyoid bone was built up and analyzed using MIMICS 22.0V software and subsequently measured using SPSS 22v for statistical record.

Results: There was a statistically significant relationship in both dimensional changes of dentoalveolar complex and the hyoid bone configuration (P <0.05). Also, there were a highly significant correlation (p <0.01) in males with severe malocclusion insufficiency. The 3D reconstructive models of Hyoid bone appeared bulkier and longer forward in the severe malocclusion group to be statistically different from another normal group (p <0.01).

Conclusion: This study reveals the 3D dimensional change of Hyoid bone configuration in relation to dentoalveolar discrepancy affecting in result the skeletomuscular apparatus and Obstructive Sleep Apnea (OSP) treatment plan.