. 2020 Oct 26;12(5):273–282. doi: 10.4047/jap.2020.12.5.273

Table 3. Means ± SDs of SBS values obtained from aged specimens.

Material	Surface treatment
Material	C	A	E	L
CE	9.46 ± 0.81^x1	13.21 ± 1.03^xy2	12.51 ± 0.81^x2	12.90 ± 0.58^x2
VE	9.98 ± 0.73^xy1	12.85 ± 1.02^x2	13.49 ± 1.15^x2	13.45 ± 1.20^x2
VM	10.79 ± 0.84^y1	13.28 ± 0.86^xy2	15.45 ± 0.57^y3	14.03 ± 0.94^x2
EC	10.83 ± 0.86^y1	14.32 ± 0.98^y23	15.61 ± 1.31^y2	13.94 ± 1.64^x3

SDs: Standard deviations; SBS: Shear bond strength; C: Control; A: Air abrasion; E: Etching; L: Laser irradiation; CE: Cerasmart; VE: Vita Enamic; VM: Vita Mark II; EC: E.max CAD. Different superscript letters (x and y) in the same column indicate a significant intra group difference in scores, and different superscript numbers (1, 2, and 3) in the same row indicate a significant inter group difference in scores (P ≤ .05). Data are expressed in MPa.