Objective:To study the effects of sealing ability of Vitapes pasty on apical microleakage of RCT.Methods:60 extracted human teeth were randomly divided into 4 groups. After obturation and immersion in 2 % Methylene bluy solution for one week,the teeth were sectioned longitutionally,dye penetration was measured and the results were statistically analyzed.Results:The longitutionally and dye penetration with Vitapex were significantly different to the other sealant (P<0.01) . The longititutionally and dye pene...