Table 1.

Mean±standard deviations (SD), minimum and maximum microtensile bond strength in MPa after 1 week and 1 month storage in water with thermocycling of test groups and P values

Test groups	One week		One month/ Thermocycling
	Mean±SD	Min.	Mean±SD	Min.	P values
		Max.		Max.	1 week Vs 1 month/TC
GIAA	18±4.3	11.4	7.3±3.5	2.3	<.001*
		23.5		12.8
GISC	17.3±3.9	11. 6	0	-	Debonded
		22
GISCSI	16.8±3.7	13.3	0	-	Debonded
		23
MLAA	18.7±2.5	14.8	10.±2.4	7.1	.004*
		22.7		13.7
MLSC	20.4±2.2	17.1	9.7±3	6.1	<.001*
		23.7		15
MLSCSI	31.8±3.4	26.6	15.4±2.8	11.3	<.001*
		36.3		18.6
UNAA	19.1±4.4	11.9	9.2±3.9	6.2	.04*
		23.8		18.6
UNSC	21.6±3.3	17.3	13.1±3.8	8.4	.006*
		26.2		19.2
UNSCSI	28.6±6.2	19.2	16.4±4.2	10.5	<.001*
		36		24

Group codes

GI: Ketac Cem Plus

ML: Multilink Automix

UN: RelyX Unicem

AA: Air borne particle abrasion

SC: Silica coating

SCSI: Silica coating and silane application