“Sharpen”滤镜可提高垂直根折的放射检测效果。
The 'Sharpen' filter improves the radiographic detection of vertical root fractures.
机构信息
Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
出版信息
Int Endod J. 2015 May;48(5):428-34. doi: 10.1111/iej.12331. Epub 2014 Jul 7.
AIM
To compare the diagnostic accuracy of digital enhancement filters in the diagnosis of vertical root fractures.
METHODOLOGY
The sample consisted of 40 single-rooted teeth randomly divided into two groups: experimental and control. Vertical root fractures were induced in the experimental group using a universal testing machine. All teeth were individually radiographed with three different horizontal angles using the Digora Optime(®) digital system. Three observers separately examined the original and filtered images (3D Emboss, Negative, Sharpen and Shadow). The area under Receiver Operating Characteristic curve values (Az) for each protocol were compared by one-way anova with post hoc Bonferroni test. The significance level was set at 5%.
RESULTS
The highest Az value was obtained using the Sharpen filter, with significant differences from the original and other filtered images (P < 0.05). The 3D Emboss filter had the lowest Az value, which was significantly different from the other filtered images (P < 0.05).
CONCLUSION
When using the Digora Optime(®) system, the 'Sharpen' filter is recommended to improve the radiographic detection of vertical root fractures.
目的
比较数字增强滤波器在诊断垂直根折中的诊断准确性。
方法
样本由 40 颗单根牙组成，随机分为两组：实验组和对照组。实验组使用万能试验机诱导垂直根折。所有牙齿均使用 Digora Optime(®)数字系统以三种不同的水平角度单独拍摄。三位观察者分别单独检查原始图像和过滤图像（3D 浮雕、负片、锐化和阴影）。使用单向方差分析和事后 Bonferroni 检验比较每个方案的受试者工作特征曲线下面积值（Az）。显著性水平设为 5%。
结果
锐化滤波器获得的 Az 值最高，与原始图像和其他过滤图像有显著差异（P<0.05）。3D 浮雕滤波器的 Az 值最低，与其他过滤图像有显著差异（P<0.05）。
结论
使用 Digora Optime(®)系统时，建议使用“锐化”滤波器来提高垂直根折的放射照相检测。
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