Durability of the adhesive cementation to the dentin substract

Abstract

ObjectiveThe aim of this study was to evaluate, in vitro, the union stability of resin cements to the dental substract through microtensile bond strength (µTBS) analysis and scanning electron microscopy (SEM). G6 = 11.01 (A) and after 1 year: G1 = 9.75 (A), G2 = 11.73 (A); G3 = 20.10 (B); G5 = 6.80 (A); G6 = 21.09 (B). All G4 group presented pretest failures. Methods Fifty /Kuraray without pre-treatment and G6-Multilink Sprint/Ivoclar-Vivadent which were adhered to its respective indirect resin composite restoration, (G1-Clearfil AP-X/Kuraray; G2-Filtek Z350/3M ESPE; G3-Gradia Direct X™/GC; G4-Aelite™/ Bisco; G5-Clearfil AP-X/ Kuraray; G6-Tetric Ceram/ Ivoclar-Vivadent). The resin blocks were cemented and the sticks were obtained by tooth, with an area of adhesive interface of 0,8mm² (±0,2). Results The mean values, submitted to Mann-Whitney and Kruskal-Wallis tests (α = 5%) were in MPa after 24 hours: G1 = 9.66 (A), G2 = 13.37 (A); G3 = 15.89 (A); G5 = 4.18 (B); ConclusionDuring the one year period, with the exception of BisCem, the self-adhesive resin cements were a favorable alternative for the adhesive cementation, standing out among these, the G-Cem and Multilink Sprint.