Table 3.

Comparison of resin tag penetration in different groups

Group	Resin tag number	Resin tag length Mean ± SD (μm)	p value*	Significant pairs**
A1	32	11.38 ± 6.23	p < 0.001	A1 and B1, A1 and B2, A1 and C1, A1 and C2, A2 and C1, A2 and C2, B1 and C2, B2 and C2, C1 and C2
A2	52	19.66 ± 6.71
B1	59	24.85 ± 12.80
B2	71	26.24 ± 10.49
C1	58	29.20 ± 11.54
C2	97	50.82 ± 21.78

^*One-way ANOVA comparison on resin tag length

^**Scheffe test