Radiovisiography versus Conventional Radiography for Estimation of Canal Length: an in Vitro Study

The aim of this study was to compare the accuracy of the Radiovisiography (RVG) with conventional Radiographic in canal length estimation in vitro for root canal treatment. Forty-single-rooted teeth were endodontically assessed and working lengths were determined using both conventional intra-oral dental film and Radiovisiography (RVG) 1R1X 70 intra-oral x-ray system. Measurement assessment was done by two observers. The actual pre-measured lengths of the files and roots were unknown to the observers. Result showed that both conventional radiography and RVG showed a significant greater length than the true length. These differences are statistically significant (P<0.05) but of limited clinical significance. In conclusion RVG is of equal value to conventional radiography in root canal length determination. It was concluded that RVG has the advantage of low radiation dose and rapid image production and recommended to be used during endodontic therapy.