Three-dimensional mapping of cortical bone thickness in subjects with different vertical facial dimensions

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Abstract

Background: The purpose of this study was to determine differences in cortical bone thickness among subjects with different vertical facial dimensions using cone beam computed tomography (CBCT). Methods: From 114 pre-treatment CBCT scans, 48 scans were selected to be included in the study. CBCT-synthesized lateral cephalograms were used to categorize subjects into three groups based on their vertical skeletal pattern. Cortical bone thickness (CBT) at two vertical levels (4 and 7 mm) from the alveolar crest were measured in the entire tooth-bearing region in the maxilla and mandible. Results: Significant group differences were detected with high-angle subjects having significantly narrower inter-radicular CBT at some sites as compared to average- and low-angle subjects. Conclusions: Inter-radicular cortical bone is thinner in high-angle than in average- or low-angle subjects in few selected sites at the vertical height in which mini-implants are commonly inserted for orthodontic anchorage.

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Sadek, M. M., Sabet, N. E., & Hassan, I. T. (2016). Three-dimensional mapping of cortical bone thickness in subjects with different vertical facial dimensions. Progress in Orthodontics, 17(1). https://doi.org/10.1186/s40510-016-0145-x

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