Prabhakar Ramachandra, Rajakumar P, Karthikeyan M K, Saravanan R, Vikram N Raj, Reddy Adarsh
Department of Orthodontics, Thai Moogambigai Dental College and Hospital, Chennai, Tamil Nadu, India.
J Pharm Bioallied Sci. 2014 Jul;6(Suppl 1):S101-6. doi: 10.4103/0975-7406.137401.
To analyze and compare the angular and linear hard tissue cephalometric measurements using hand-tracing and computerized tracings with Nemoceph and Dolphin software systems.
A total of 30 cephalograms were randomly chosen for study with the following criteria, cephalograms of patients with good contrast, no distortion, and minimal radiographic artifacts were considered using the digital method (Kodak 8000 C) with 12 angular and nine linear parameters selected for the study. Comparisons were determined by post-hoc test using Tukey HSD method. The N-Par tests were performed using Kruskal-Walli's method.
ANOVA and post-hoc.
The results of this study show that there is no significant difference in the angular and linear measurements recorded. The P values were significant at 0.05 levels for two parameters, Co-A and Co-Gn with the hand-tracing method. This was significant in ANOVA and post-hoc test by Tukey HSD method.
This study of comparison provides support for transition from digital hand to computerized tracing methodology. In fact, digital computerized tracings were easier and less time consuming, with the same reliability irrespective of each method of tracing.
使用Nemoceph和Dolphin软件系统，通过手工描绘和计算机描绘分析并比较硬组织头颅侧位片的角度和线性测量值。
共随机选取30张头颅侧位片进行研究，入选标准如下：使用数字方法（柯达8000C），选择对比度良好、无变形且放射影像伪影最少的患者头颅侧位片，研究选取12个角度参数和9个线性参数。采用Tukey HSD方法进行事后检验以确定差异。使用Kruskal-Walli方法进行N-Par检验。
方差分析和事后检验。
本研究结果表明，记录的角度和线性测量值无显著差异。手工描绘法测量Co-A和Co-Gn这两个参数时，P值在0.05水平具有显著性。在方差分析和Tukey HSD方法的事后检验中，此结果具有显著性。
本比较研究为从数字手工描绘向计算机描绘方法的转变提供了支持。事实上，数字计算机描绘更简便、耗时更少，且无论采用哪种描绘方法，可靠性相同。
