Comparative study of the sealing ability of retrofilling techniques as correlated to marginal adaptation

ABSTRACT

This investigation was undertaken to compare the sealing ability andadaptation of four retrofilling materials, and five retrofilling techniques,namely; amalgam with and without varnish, composite, cavit W and heat sealedgutta percha. Electrochemical sealability study showed that all testedretrofilling materials leaked. However, leakage varied greatly betweendifferent tested materials. The smallest amount of leakage was detected withheat sealed gutta percha, followed by cavit W. amalgam without varnish gave thehighest leakage score. On the other hand, amalgam with varnish and compositetook an intermediary position. These results correlated completely with theresults of marginal adaptation concerned with cavit W, composite and amalgamwithout varnish. However, negative correlation was found in case of heatsealed gutta percha and amalgam with varnish