Table 1: Results of intergroup comparison of shear bond strength (MPa) and maximum load registered (N) (independent t tests).

Variables GROUP 1
MIM BASE BRACKETS
N=20
GROUP 2
WELDED BASE BRACKETS
N=20
P
Mean s.d. Mean s.d.
Shear bond strength (MPa) 9.58 5.80 13.28 2.58 0.013*
Maximum load registered (N) 107.54 65.11 167.38 32.55 0.000*

* Statistically significant for P<0.05. s.d. – standard deviation MPa – MegaPascals N - Newtons