Wear Behavior of Monolithic Zirconia after Staining, Glazing, and Polishing Opposing Dental Restorative Materials: An In Vitro Study

The purpose of this in vitro study was to compare the effect staining, glazing, and polishing on wear behavior stabilized zirconia with 5 mol% yttrium oxide (5Y-TZP) opposing 5Y-TZP, leucite-reinforced ceramic (LC), lithium disilicate (LD), microhybrid composite resin (MCR). Hemispheres 5Y-TZP were divided into six groups (n = 10) according finishing procedure: C (control), S (staining), G (glazing), P (polishings), SG (staining plus glazing), SP polishing). two-body test (2BW) performed (20 N load, at 2 Hz, until 300,000 cycles). Vertical height loss hemispheres (VHL) depth restorative materials (WD) analyzed using a profile projector laser confocal microscope, respectively. Data VHL WD generalized linear model by Wald t post hoc Bonferroni adjustment (α 0.05). polishing, material had significant (p < 0.05) WD. Polishing reduced MCR, LC, LD. There an increase LD MCR. presented highest resistance, while MCR lowest. recommended promote staining durability decrease rates