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Published on: February 23, 2024
Comparison of C2 vertebra rotation in patients with mandibular asymmetry using cone beam computed tomography
Catalina Ros1, Josefina Vial Letelier2, Sanae Kobayashi3
1Department of Orthodontics, Faculdade São Leopoldo Mandic, Campinas, Brazil.
Objective:
To compare rotation of the C2 vertebra in axial CBCT sections of adults with mandibular asymmetry.
Methods:
CBCTs of 66 individuals obtained with an iCAT-Q Vision device were classified into three groups (22 each) according to menton deviation from the midsagittal plane (mild, moderate, severe). Coronal, axial, and three-dimensional linear measurements were obtained. Data were analyzed using the Shapiro-Wilk test. Differences between the chin deviation side and the contralateral side were assessed with paired t-test, and among groups with ANOVA followed by Tukey's post hoc test.
Results:
A statistically significant difference in C2 rotation was observed between groups (p = .031) and in contralateral Co-Go measurements between mild and severe groups (p = .034). Within-group analysis showed a difference in the severe group (p < .05).
Conclusions:
Individuals with severe mandibular asymmetry exhibit greater C2 vertebral rotation relative to the coronal plane than those with mild asymmetry.
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