“…Therefore, these ceramics are not suitable for acid etching 8,[14][15][16] . For this reason, surface treatment methods ranging from air abrasion with aluminum oxide (Al 2O3) 8,[17][18][19][20] and silica coating with silica-modified Al2O3 particles 9,17,18,21) to laser application are frequently used on Y-TZP restorations.…”