上颌阻生尖牙患者寰椎形态变异情况的锥形束CT研究

doi:10.13591/j.cnki.kqyx.2022.05.010

Abstract

Abstract: Objective To investigate morphological anomalies of atlas in patients with buccally or palatally maxillary impacted canines (BIC/PIC) using cone-beam computed tomography (CBCT), and to contribute to predicting and early intervening maxillary impacted canines in clinic. Methods A total of 196 CBCT images of patients with maxillary impacted canines were selected as the experimental group, and 196 CBCT images with normally erupted canines matched for gender, age and Angle classification were selected as control group. CBCT images of all samples were imported, and lateral cephalometric and 3D images were reconstructed in Dolphin to record the prevalence of ponticulus posticus and posterior atlas arch deficiency (including classification of posterior atlas arch and spondylolisthesis of posterior atlas arch). Statistics were analyzed using SPSS. Results The prevalence of ponticulus posticus was 32.6% in the experimental group, significantly higher than 22.4% in the control group (P=0.024). The prevalence of ponticulus posticus in PIC group was significantly higher than that in the control group (P=0.005). There was no significant difference between BIC group and control group, and so was there between BIC and PIC group (P>0.05). The prevalence of posterior atlas arch deficiency showed no statistical difference between experimental group and control group (P>0.05). Conclusion Ponticulus posticus occurrs more often in patients with palatally maxillary impacted canines than people with normally erupted canines.

Key words: cone-beam computed tomography (CBCT), maxillary impacted canines, ponticulus posticus, posterior atlas arch deficiency

CLC Number:

R783.5

YAN Qinyue, CAO Dan, YAN Bin. Morphological anomalies of atlas in patients with maxillary impacted canines: a cone-beam computed tomography study[J]. Stomatology, 2022, 42(5): 437-441.

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Morphological anomalies of atlas in patients with maxillary impacted canines: a cone-beam computed tomography study

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