MICROLEAKAGE OF ENDODONTIC TEMPORARY RESTORATIVE MATERIALS

This study compared the sealing of Caviton, Cavit, and IRM at two powd er to liquid ratios of 6 g/ml and 2 g/ml. Standard endodontic access p reparations were made in 140 noncarious, nonrestored crowns of extract ed human molars. They were divided into six groups, including positive and negative controls. Microleakage assessment was evaluated by basic fuchsin dye penetration after thermal cycling (5 to 55-degrees-C for 100 cycles). The results indicated that Caviton provided the best seal , followed by Cavit. Cavit demonstrated better sealing than IRM at the powder to liquid ratio of 6 g/ml and 2 g/ml. There was a statisticall y significant difference in leakage between the Cavit group and IRM (p owder to liquid = 6 g/ml), between the Cavit group and IRM (powder to liquid = 2 g/ml) group (p < 0.05). However, no statistically significa nt difference between the two different powder to liquid ratio groups of IRM was disclosed.