Table 4: Intercomparison of shear bond strength of various GICs

95% confidence interval

Group (I)

Group (J)

Mean difference (I-J)

Std. error

Level of significance

Lower bound

Upper bound

Group A

Light cure GIC (group B)

–4.92

0.2864

0.0000*

–5.85

–3.98

(conventional GIC)

Type IX GIC (group C)

–2.30

0.4027

0.0000*

–3.22

–1.36

Group B

Conventional GIC (group A)

4.92

0.2864

0.0000*

3.98

5.85

(light cure GIC)

Type IX GIC (group C)

2.63

0.4832

0.0000*

1.69

3.55

Group C

Conventional GIC (group A)

2.30

0.4027

0.0000*

1.36

3.22

(type IX GIC)

Light cure GIC (group B)

–2.63

0.4832

0.0000*

–3.55

–1.69

*The mean difference is significant at the 0.05 level, i.e., p < 0.05