. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Dent Mater. 2021 Apr 15;37(7):1096–1106. doi: 10.1016/j.dental.2021.03.009

Table 4.

Average roughness (Ra) and ten-point mean roughness (Rz) mean values (standard deviation) of each experimental group before and after glaze firings

	Ra (μm)		Rz (μm)
Group	Before glaze	After glaze	Before glaze	After glaze
EG-F	0.18 (0.04)^A,a	0.07 (0.02)^B,a	2.15 (0.52)^A,a	0.45 (0.08)^B,b
EG-S	0.18 (0.06)^A,a	0.06 (0.01)^B,a	2.11 (0.73)^A,a	0.42 (0.08)^B,b
G-F	0.17 (0.05)^A,a	0.10 (0.03)^B,a	2.07 (0.56)^A,a	0.94 (0.39)^B,a
G-S	0.15 (0.03)^A,a	0.08 (0.01)^B,a	2.02 (0.50)^A,a	0.71 (0.25)^B,a

Uppercase letters within a row indicate statistical differences between times. Lowercase letters within a column indicate statistical differences among treatments (Two-way RM ANOVA, Tukey’s test)