A Comparison of Contrast Media in Endodontics
This study had an objective to compare the use of radiopaque contrast media in endodontics. Fifteen extracted human premolar teeth were injected using 3 types of contrast media which were barium-containing compound (barium: water = 2/1 ; water soluble; and oil soluble iodine-containing compounds respectively. Digital radiographs of all teeth were made. Mean gray value of each contrast medium, fullness of the contrast media in canals and satisfaction of each contrast medium's radiopacity were evaluated by 3 observers. Results showed that there were significant differences of mean gray values among those 3 media ( p < 0.05 Fried- man Test), and the barium-containing compound showed the highest value. When fullness of the contrast media in each specific area of roots was considered, no statisti- cally significant differences ( p > 0.05 Cochran Q Test) were found among the 3 media except for the apical area. Iodine-containing compounds showed less efficiency to fill the canals in the apical third area ( p < 0.05 , McNemar Test). Regarding to the satisfaction of radiopacities of the contrast media, there were significant differences among the 3 media ( p < 0.05 Friedman Test). The barium-con- taining compound was the highest, followed by water soluble and oil soluble, iodine-containing compounds. In conclusion, radiopacity of the contrast medium had an impact on satisfaction and visibility of the root canal. The water soluble iodine-containing compounds seem to be the media of choice in clinical trial of endodontics.
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