Table 4.

Multiple comparisons of microleakage scores among groups at the mesial and distal margins in enamel-adhesive and adhesive-bracket interfaces^a

Interface	Margin	N	Groupb	P value	Multiple comparisons
					Group 6	Group 7	Group 8
Enamel-adhesive interface	Mesial	15	Group 5	.012	NS	**
		15	Group 6				NS
		15	Group 7				NS
		15	Group 8
	Distal	15	Group 5	.008	NS	**
		15	Group 6				NS
		15	Group 7				NS
		15	Group 8
Adhesive-bracket interface	Mesial	15	Group 5	.955	NS	NS
		15	Group 6				NS
		15	Group 7				NS
		15	Group 8
	Distal	15	Group 5	.271	NS	NS
		15	Group 6				NS
		15	Group 7				NS
		15	Group 8

^aN indicates sample size; SD, standard deviation; S, significant; NS, not significant;

^*P< 0.05;

^**P<0.01

^bGroup 5: Acid etching + direct illumination; Group 6: Acid etching + transillumination; Group 7: Self etching primer + direct illumination; Group 8: Self etching primer +transillumination.