Table 1 The materials used in the study

IPS e.max CAD; lithium disilicate glass ceramic (LDS)

SiO₂ (57–80), Li₂O (11–19), K₂O (0–13), P₂O₅ (0–11), ZrO₂ (0–8), ZnO (0–8), Al₂O₃ (0–5), MgO (0–5), coloring oxides (0–8)

10.2

360

Ivoclar Vivadent

IPS e.max Ceram; low-fusing nano-fluorapatite glass-ceramic

SiO₂ (60–65), Al₂O₃ (8–12), Na₂O (6–9), K₂O (6–8), ZnO (2–3), CaO, P₂O₅ ve F (2–6), other oxides (2–8.5), pigments (0.1–1.5)

9.5

90

Ivoclar Vivadent

Vita Suprinity; zirconia-reinforced lithium silicate glass ceramic

ZrO₂ (8–12), SiO₂ (56–64), Li₂O (15–21), La₂O₃ (0.1), pigments (< 10), various (> 10)

12.3

420

Vita Zahnfabrik

Vita VM 11; low-fusing feldspar ceramic

SiO₂ (62–65), Al₂O₃ (8.5–12), Na₂O (5–7.5), K₂O (9–12), CaO (1–2), ZrO₂ (< 1), B₂O₃ (4–6)

11.6

100

Vita Zahnfabrik