Authors : Mojdeh Mehdizadeh, Abbas Ali Khademi and Naser Nasr
Abstract: Radiographic techniques play a significant role in dentistry. Despite their developments, radiographic films have some problems in determining the root canal length. In recent years, digital radiography system has changed the dental radiology. The aim of this research was to compare the canal length of teeth by two techniques including digital parallel radiography and conventional parallel radiography. Sixty five single rooted human teeth were included in this study. The canal length was first determined in vitro by visual manner (clinical examination). Then, the measurements were carried out by digital parallel radiography and conventional parallel radiography technique. The means of calculated lengths were compared with ANOVA and Duncan’s tests. The results showed that the mean canal length in conventional parallel radiographyl and digital parallel radiography methods and real length are 22.1462, 21.6031 and 22.1997, respectively. According to ANOVA test, there was a significant difference in canal length between three groups. Duncan test showed a significant difference between the real length and conventional parallel radiography as well as between the real length and digital parallel radiography (p<0.05) but there was no significant difference between conventional parallel radiography and digital parallel radiography (p>0.05). According to the results of this study, there is no difference between the two techniques. The accuracy of both techniques appeared to be the same and the measured tooth length with both methods were different to the real length. However because of advantages of digital parallel radiography, it is much more preferred to other systems.
Mojdeh Mehdizadeh, Abbas Ali Khademi and Naser Nasr, 2010. Canal Length Measurement by Digital Radiography and Conventional Parallel Radiography. Research Journal of Biological Sciences, 5: 400-403.