2种基于锥形束CT的头影测量软件测定常用角度值的比较

Comparison of general angle magnitudes measured using two kinds of cephalometric measuring software

目的比较三维测量软件与Winceph 8.0测量软件测定出的头颅侧位片中的常用角度值。方法对40名需要正畸的患者进行锥形束CT(CBCT)扫描。在Invivo Dental 5.0软件中,按照统一条件将CBCT数据转化为头颅侧位片。选择数个常用角度值,分别通过三维测量软件与Winceph 8.0测量软件进行定点测量。对三维测量软件与Winceph 8.0测量软件定点测量所得的数据进行统计分析。结果 2种测量软件测定出的头颅侧位片中的常用角度值大部分无明显差异。结论该研究为三维测量软件的广泛运用提供支持。

Objective To investigate and compare the general angles on coronal lateral position using a three- dimensional analyzing software and the conventional Winceph 8.0 software. Methods Forty pre-orthodontic patients were radiographed with cone-beam computed tomography（CBCT） techniques. According to the identical condition, CBCT data were converted to cephalograms using Invivo Dental 5.0 software. Certain landmarks were measured using the three- dimensional analyzing software and Winceph 8.0, and the measurements were repeated twice for each method. All data were subjected to statistical analysis, and rank sum test was used to determine the difference between the three-dimensional analyzing software and Winceph 8.0. Results No obvious differences on the general angle magnitudes at the coronal lateral position were observed between the three-dimensional analyzing software and Winceph 8.0. Conclusion The results from the measurement by the two methods did not show significant differences. This finding indicates that the three-dimensional analyzing software and Winceph 8.0 exhibit the same performance. Moreover, the three-dimensional analyzing software indicated distinct superiority on certain landmarks.