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Abstract
Purpose: The aim of the present study was to evaluate microleakage of cemented nickel chromium and milled Titanium dowel systems cemented with three different luting agents. Materials and Methods: Two types of metallic posts (milled Ti and custom made NiCr) and three types of luting cements (Adhesor, Ketac cem and Rely X Unicem) were used. A total of 30 sound upper central incisors were divided into two groups (15 for each post type). Each group was further subdivided according to type of cement used into three equal sub-groups (n=10 each). Sub group A: Posts cemented with zinc phosphate (Adhesor), Sub group B: Posts cemented with glass ionomer (Ketac cem), Sub group C: Posts cemented with adhesive resin cement (RelyX Unicem). All samples received 500 thermal cycles between 5{u00BA}C ± 4{u00BA}C and 60{u00BA}C ±4{u00BA} C and then were immersed in 0.5% solution leishman dye for 24 hours at room temperature