. 2016 Sep-Oct;24(5):447–452. doi: 10.1590/1678-775720150561

Table 1. Mean biaxial flexural strength, MPa (SD), mean number of fractured fragments (SD) and Pearson correlation coefficient. Groups with similar superscript letter are not statistically different (p<0.05).

Group	sBI(MPa)	Number of fragments	Pearson correlation coefficient (r)
ZO	199±26^a	4.4±0.9^a	0.65
CM	200±21^a	4.2±1.0^a	0.494
LU	210±18^a	3.3±0.5^b	0.609
VE	129±22^b	2.2 ±0.4^c	0.761