Influência do cimento resinoso e do cimento endodôntico sobre a resistência e durabilidade da união entre um pino de fibra de vidro e a dentina intra radicular: avaliação in vitro

Abstract

This work has sought to evaluatethe following hypothesis: Ho-there would be no influence ofresin cementandroot canalsealeron the durabilityof the union betweenthe fiberglass postand the dentin, H1- would influencethetypesealeron the durabilityof the union between thefiber glass post andthedentin: H2-wouldinfluencethe type ofresin cementon the durabilityof the union betweenthe fiber glass post andthedentinandH3-would influencethe depth ofcementationon the durabilityof the union between the fiber glass post andthe dentin. Fortyhuman canines, were randomly dividedinto four groups. G1(R +E)RelyxU100/Endofill, G2(P +E)PanaviaF2.0/EndoFill, G3(R +S) RelyxU100/Sealer26,G4(P +S) PanaviaF2.0/Sealer26.At the endof thecementingprocedure, the specimenswere sectionedin aprecisioncutting machine(Isomet 1000PrecisionLabCutSaw) on 4slices of2mm. Thenthe sliceswere subjected tomechanical testsextrusionPush-out in amechanical testing machinewith a load cellEMIC50N, speed 0.5 mm/ min.The resultsaccording to different depthcementinganalyzedwere as follows: (p ≥ 0.05) (Mpa) 1apical R+E (1.35 ±1.28), P+E (2.70 ±0.89),R+S(3.89±0.70), P+S(4.30±1.02), 2 middleapicalR+E(1.38±1.28), P+E(2.98±1.43), R+S(4.02± 1.14), P+S(4.49±1.82), 3 mediumcoronalR+E(2.46±0.73), P+E(3.72±0.78), R+S(4,85 ±0.71), P+S(6.14±0.73), 4 coronalR+E(5.59±1.08), P+E(5.74±1.06), R+S(6.71±1.07), P+S (7.40 ±1.51). The results also confirmedthe threehypothesis tested: h1, h2andh3.