Junqueira Cintia Helena Zingaretti, Janson Guilherme, Junqueira Marisa Helena Zingaretti, Mendes Lucas Marzullo, Favilla Eduardo Esberard, Garib Daniela Gamba
Centro de Estudos e Pesquisas, Rio de Janeiro, Rio de Janeiro, Brazil.
Department of Orthodontics, College of Dentistry, Universidade de São Paulo, Bauru, São Paulo, Brazil.
Dental Press J Orthod. 2015 Mar-Apr;20(2):83-9. doi: 10.1590/2176-9451.20.2.083-089.oar.
One of the advantages of cone-beam computed tomography (CBCT) is the possibility of obtaining images of conventional lateral cephalograms derived from partial or complete reconstruction of facial images.
This study aimed at comparing full face, right and left hemifacial CBCT cephalograms of orthodontic patients without clinical facial asymmetry.
The sample comprised nine clinically symmetrical patients who had pretreatment full face CBCT. The CBCTs were reconstructed so as to obtain full face, right and left hemifacial cephalograms. Two observers, at two different times, obtained linear and angular measurements for the images using Dolphin 3D software. Dependent and independent t-tests were used to assess the reproducibility of measurements. Analysis of Variance and Kruskal-Wallis tests were used to compare the variables obtained in the CBCT derived cephalometric views.
There was good reproducibility for CBCT scans and no statistically significant differences between measurements of full face, right and left hemifacial CBCT scans.
Cephalometric measurements in full face, right and left hemifacial CBCT scans in clinically symmetrical patients are similar.
锥形束计算机断层扫描（CBCT）的优点之一是能够通过对面部图像进行部分或完全重建来获取传统头颅侧位片的图像。
本研究旨在比较无临床面部不对称的正畸患者的全脸、右侧和左侧半脸CBCT头颅侧位片。
样本包括9名临床对称且有治疗前全脸CBCT的患者。对CBCT进行重建以获取全脸、右侧和左侧半脸头颅侧位片。两名观察者在两个不同时间使用Dolphin 3D软件对图像进行线性和角度测量。使用相关样本t检验和独立样本t检验评估测量的可重复性。方差分析和Kruskal-Wallis检验用于比较CBCT衍生的头颅测量视图中获得的变量。
CBCT扫描具有良好的可重复性，全脸、右侧和左侧半脸CBCT扫描测量之间无统计学显著差异。
临床对称患者的全脸、右侧和左侧半脸CBCT扫描的头颅测量结果相似。
