. Author manuscript; available in PMC: 2023 Jul 1.

Published in final edited form as: Int J Prosthodont. 2022 Jul-Aug;35(4):469–479. doi: 10.11607/ijp.7551

Table 4.

Flexural Strength (MPa), Weibull modulus (m), Characteristic Strength (σo), and 95% CI Biaxial Flexural Strength of Experimental Groups

Porcelain: zirconia ratio	Bonding strategy	Group name	Flexural strength (MPa)	Weibull modulus (m)	95% CI	Weibull characteristic strength	95% CI
0.7: 0.5 mm	Aluminum oxide + SBU	VB/Zr-SBU	636.55 ± 98.02 ^α	7.45 ^A	4.412.6	675.3 ^a	618.6–737.2
	Silica-coated aluminum oxide	VB/Zr-RC	344.05 ± 98.02 ^β	4.8 ^A	2.38.7	373.5 ^c	326.8–426.9
	No surface treatment	VM/Zr (control)	489.25 ± 66.45 ^γ	8.5 ^A	5.613.0	515.8 ^b	477.5–557.1
0.9: 0.3 mm	Aluminum oxide + SBU	VB/Zr-SBU	698.4 ± 194.85 ^α	4.8 ^A	2.56.3	767.5 ^a	652.1–903.3
	Silica-coated aluminum oxide	VB/Zr-RC	471.48 ± 151.82 ^β	3.2 ^A	1.75.9	526.1 ^{a b c}	430.4–642.9
	No surface treatment	VM/Zr (control)	497.33 ± 143.15 ^β	3.7 ^A	2.26.2	549.8 ^{a b}	461.3–655.4

Different uppercase superscript letters indicate significant differences in Weibull moduli among the groups, and different lowercase superscript letters indicate significant differences in characteristic strength among groups. Different superscript symbols indicate differences in flexural strength.