Table 3. Mean ± standard deviation of µSBS values (MPa) of CAD-CAM RMC materials treated with different surface conditioning strategies to resin luting cement.

MSC strategy	Silane application	RMC Type					Total
		GC	LU	VE	VG	BC
Control	No	13.93 ± 4.37	13.31 ± 3.97	11.40 ± 3.09	14.47 ± 4.25	14.32 ± 2.06	13.48 ± 3.64D
	Yes	13.54 ± 4.37	13.35 ± 3.01	11.92 ± 2.74	14.32 ± 3.73	13.72 ± 3.84	13.37 ± 3.49D
	Total	13.74 ± 4.23CD	13.33 ± 3.40CD	11.66 ± 2.83D	14.40 ± 3.87CD	14.02 ± 3.00CD	13.43 ± 3.55a
APA	No	17.98 ± 4.83	17.89 ± 4.05	14.10 ± 2.46	19.86 ± 3.11	18.88 ± 1.35	17.74 ± 3.77AB
	Yes	13.69 ± 3.45	16.11 ± 3.48	20.44 ± 3.65	19.27 ± 3.39	12.91 ± 3.18	16.48 ± 4.43BC
	Total	15.84 ± 4.62BCD	17.00 ± 3.76ABC	17.27 ± 4.44ABC	19.57 ± 3.16AB	15.89 ± 3.88BCD	17.11 ± 4.14b
LI2W	No	18.96 ± 4.22	21.82 ± 4.30	15.76 ± 5.23	17.43 ± 3.74	18.61 ± 4.69	18.51 ± 4.69AB
	Yes	12.83 ± 3.52	19.81 ± 3.66	18.08 ± 4.29	18.03 ± 2.76	12.14 ± 2.60	16.18 ± 4.51BC
	Total	15.89 ± 4.91BCD	20.82 ± 3.99A	16.92 ± 4.77ABC	17.73 ± 3.19ABC	15.37 ± 4.96BCD	17.35 ± 4.72b
LI3W	No	19.10 ± 4.12	18.96 ± 3.24	16.63 ± 5.43	23.86 ± 6.05	18.29 ± 2.09	19.37 ± 4.85A
	Yes	12.73 ± 2.25	14.88 ± 2.37	19.03 ± 3.42	17.79 ± 4.09	10.60 ± 3.94	15.01 ± 4.45CD
	Total	15.92 ± 4.59BCD	16.92 ± 3.46ABC	17.83 ± 4.56ABC	20.83 ± 5.89A	14.44 ± 5.00CD	17.19 ± 5.12b
Total	No	17.49 ± 4.69A	17.99 ± 4.85A	14.47 ± 4.53BCD	18.90 ± 5.47A	17.52 ± 3.30A	17.28 ± 4.80
	Yes	13.20 ± 3.34CD	16.04 ± 3.87ABC	17.37 ± 4.74AB	17.36 ± 3.84AB	12.34 ± 3.47D	15.26 ± 4.38
	Total	15.34 ± 4.58ab	17.02 ± 4.46bc	15.92 ± 4.82ab	18.13 ± 4.75c	14.93 ± 4.25a	16.27 ± 4.70b

a–c: No difference between the same superscript lowercase letter, A–D: No difference between the same superscript uppercase letter

SC, surface conditioning; RMC, resin-matrix ceramic; GC, GC Cerasmart; LU, Lava Ultimate; VE, Vita Enamic; VG, Voco Grandio; BC, Brilliant Crios; APA, air-borne particle abrasion; LI^2W, laser irradiation with 2.0 W power; LI^3W, laser irradiation with 3.0 W power