Table 2.

Shear bond strength (MPa) of tested specimens in the four groups (n=15)

Group	Minimum	Maximum	Mean	Standard deviation
Control	11.89	37.63	23.54	6.31
10%	13.32	26.32	21.81	2.82
20%	4.87	35.96	20.83	8.35
30%	12.24	33.42	22.91	5.66