TABLE 1. Shear bond strength means (in MPa) for all groups, presented from the highest to the lowest.

Groups	Means (Standard deviations)
6	24.32 (3.0)a
4	22.00 (5.2)a
2	15.25 (3.0)b
1	13.45 (3.5)bc
5	13.22 (4.3)bc
3	10.86 (3.4)c

Equal letters = no statistically significant difference