Bond Strength and Deflection of Four Types of Bonded Lingual Retainers

Table 3

Pairwise comparisons of the peak SBS values of the four groups.

Group (I)	Group (J)	Mean difference (I-J)	Std. error	value	95% confidence interval
					Lower bound	Upper bound
Three-strand	Bond-A-Braid	−5.19	10.06	0.95	−31.61	21.23
	Ortho Flex	5.54	10.06	0.95	−20.88	31.96
	Retanium	−35.79	10.06	≤0.001	−62.21	−9.37
Bond-A-Braid	Ortho Flex	10.74	10.06	0.71	−15.68	37.15
	Retanium	−30.59	10.06	0.02	−57.01	−4.17
Ortho Flex	Retanium	−41.33	10.06	≤0.001	−67.75	−14.91

The mean difference is significant at 0.05 level.