6XEPLWWHG -DQXDU\ 0RGL¿FDWLRQ 0D\ $FFHSWHG -XQHO bjectives: To investigate the bond strength and seal ability produced by AH Plus/guttapercha, EndoREZ and RealSeal systems to root canal dentin. Material and Methods: Sixty extracted single-root human teeth, instrumented manually to size 40, were divided into three groups (n=20) according to the sealer used; G1: AH Plus, G2: EndoREZ, and * 5HDO6HDO VHDOHUV $IWHU ¿OOLQJ XVLQJ WKH ODWHUDO FRQGHQVDWLRQ WHFKQLTXH HDFK VHDOHU group was randomly divided into two subgroups according to the tests applied (n=10 for 3XVK RXW WHVW DQG Q IRU ÀXLG ¿OWUDWLRQ WHVW $ ÀXLG ¿OWUDWLRQ PHWKRG ZDV XVHG IRU quantitative evaluation of apical leakage. Four 1-mm-thick slices (cervical and medium level) were obtained from each root sample and a μPush-out test was performed. Failure modes were examined under microscopy at 40x, and a one-way ANOVA was applied to analyze the permeability. Non-parametrical statistics for related (Friedman's and Wilcoxon's rank tests) or unrelated samples (Kruskal-Wallis' and Mann-Whitney's tests) allowed for comparisons of μPush-out strength values among materials at the different levels. Statistical VLJQL¿FDQFH ZDV DFFHSWHG IRU S YDOXHV 5HVXOWV 7KHUH DUH QR VLJQL¿FDQW GLIIHUHQFHV DPRQJ ÀXLG ¿OWUDWLRQ RI WKH WKUHH VHDOHUV 7KH VHDOHU FRUH PDWHULDO GRHV QRW VLJQL¿FDQWO\ LQÀXHQFH WKH 3XVK RXW ERQG VWUHQJWK YDOXHV ) S DOWKRXJK VWDWLVWLFDOO\ VLJQL¿FDQW GLIIHUHQFHV ZHUH GHWHFWHG ZLWK UHJDUG WR URRW OHYHO &KL 2 =23.93; p<0.001). AH Plus and RealSeal obtained higher bond strength to intraradicular dentin in the medium URRW VOLFHV &RQFOXVLRQV 7KHUH DUH QR VLJQL¿FDQW GLIIHUHQFHV EHWZHHQ WKH SHUPHDELOLW\ DQG global μPush-out bond strength to root canal dentin achieved by AH Plus/gutta-percha, EndoREZ and RealSeal systems.
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