Schmitd Ligia Buloto, Lima Tatiana de Castro, Chinellato Luiz Eduardo Montenegro, Bramante Clóvis Monteiro, Garcia Roberto Brandão, de Moraes Ivaldo Gomes, Bernardineli Norberti
Department of Stomatology, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
J Appl Oral Sci. 2008 Mar-Apr;16(2):167-70. doi: 10.1590/s1678-77572008000200016.
The aims of this study were to evaluate the quality of indirect digitized radiographic images taken during endodontic procedures and to compare the measurements recorded with this technique to those obtained from conventional radiographs. Two-hundred conventional periapical radiographs taken at the undergraduate Endodontics Clinic of the Dental School of Bauru were digitized. The conventional and indirect digitized images were compared by three examiners as to the quality and accuracy of the measurements recorded during endodontic treatment, in canal length determination, gutta-percha adaptation, lateral condensation and final obturation. The conventional radiographs were observed on a film viewer, surrounded by a dark card, and measured with magnifying glass and a millimeter ruler; the indirect digitized images were evaluated on the Digora for Windows software, with free utilization of the bright/contrast tool. Unlike the conventional radiographic images, all indirect digitized images were considered as having a high quality. The distance between the filling material and the root apex was 0.117 mm larger, on average, for the Digora system (p<0.01). The measurements achieved by the investigated radiographic methods were clinically similar and they are thus equivalent. Changes in brightness and contrast of the images using Digora software improved the diagnosis.
本研究的目的是评估牙髓治疗过程中拍摄的间接数字化根尖片的质量，并将该技术记录的测量值与传统根尖片获得的测量值进行比较。对在包鲁牙科学院本科牙髓病诊所拍摄的200张传统根尖片进行了数字化处理。三位检查者对传统根尖片和间接数字化图像在牙髓治疗过程中记录的测量值的质量和准确性、根管长度测定、牙胶尖适配、侧向加压充填和最终充填情况进行了比较。传统根尖片在由黑卡纸环绕的观片灯上观察，并用放大镜和毫米尺测量；间接数字化图像在Digora for Windows软件上进行评估，可自由使用亮度/对比度工具。与传统根尖片不同，所有间接数字化图像均被认为质量较高。Digora系统中，充填材料与根尖之间的距离平均大0.117 mm（p<0.01）。所研究的根尖片方法获得的测量值在临床上相似，因此是等效的。使用Digora软件改变图像的亮度和对比度可改善诊断。
