%0 Generic %A GONDIM, Brenna Louise Cavalcanti %A MEDEIROS, Isabella Cavalcante %A COSTA, Bruna Palmeira %A CARLO, Hugo Lemes %A SANTOS, Rogério Lacerda dos %A CARVALHO, Fabíola Galbiatti de %D 2018 %T Effects of erosive challenge on the morphology and surface properties of luting cements %U https://scielo.figshare.com/articles/dataset/Effects_of_erosive_challenge_on_the_morphology_and_surface_properties_of_luting_cements/7514948 %R 10.6084/m9.figshare.7514948.v1 %2 https://scielo.figshare.com/ndownloader/files/13958357 %2 https://scielo.figshare.com/ndownloader/files/13958363 %2 https://scielo.figshare.com/ndownloader/files/13958372 %2 https://scielo.figshare.com/ndownloader/files/13958378 %2 https://scielo.figshare.com/ndownloader/files/13958381 %2 https://scielo.figshare.com/ndownloader/files/13958384 %2 https://scielo.figshare.com/ndownloader/files/13958387 %2 https://scielo.figshare.com/ndownloader/files/13958390 %K Tooth erosion %K resin cements %K glass ionomer cements %K hardness tests %X

Abstract Introduction Few studies investigated the surface properties of luting cements after erosive challenge. Objective To evaluate the surface roughness (Ra), Vickers hardness (VHN) and morphology of 4 luting cements after erosive challenge. Material and method Twenty specimens of each cement were prepared (4×2mm) and divided into experimental (erosive challenge) and control (artificial saliva) groups (n=10): Rely X U200 (U200); Rely X ARC (ARC); Ketac Cem Easy Mix (Ketac) and Zinc phosphate (ZnP). The erosive challenge was performed by four daily erosive cycles (90s) in a cola drink and 2 h in artificial saliva over 7 days. Ra and VHN readings were performed before and after erosion. The percentage of hardness loss (%VHN) was obtained after erosion. The surface morphology was analyzed by scanning electron microscopy (SEM). ANOVA, Tukey and Student-T tests were used (α=0.05). Result After erosion, all luting cements had increase in Ra values and U200 and ZnP groups had the highest %VHN. After saliva immersion, only U200 and ZnP groups had significant increases in Ra values and there were no significant differences among the groups in %VHN. SEM analysis showed that Ketac and ZnP groups had rough and porous surfaces, and U200 group had higher resin matrix degradation than ARC group. Conclusion Erosive challenge with a cola drink affected the surface properties of all luting cements.

%I SciELO journals