T-shaped toothbrush for plaque removal and gingival health in children: a randomized controlled trial

BMC Oral Health

Table 3 Pairwise comparison among visits for each group for plaque and gingival scores

Variable	Type of toothbrush	(I) time	(J) time	Mean difference (I–J)	SE	p value	95% CI for difference
Variable	Type of toothbrush	(I) time	(J) time	Mean difference (I–J)	SE	p value	LB	UB
Plaque score	Regular	Baseline	Visit 1	.559*	0.107	< 0.001	0.271	0.846
		Baseline	Visit 2	.876*	0.117	< 0.001	0.561	1.191
		Baseline	Visit 3	1.210*	0.126	< 0.001	0.872	1.548
		Visit 1	Visit 2	.317*	0.109	0.027	0.023	0.611
		Visit 1	Visit 3	.651*	0.103	< 0.001	0.375	0.928
		Visit 2	Visit 3	.334*	0.079	< 0.001	0.123	0.545
	T-shape	Baseline	Visit 1	.609*	0.107	< 0.001	0.322	0.897
		Baseline	Visit 2	.758*	0.117	< 0.001	0.444	1.073
		Baseline	Visit 3	1.009*	0.126	< 0.001	0.671	1.348
		Visit 1	Visit 2	0.149	0.109	1	− 0.145	0.443
		Visit 1	Visit 3	.400*	0.103	0.001	0.124	0.676
		Visit 2	Visit 3	.251*	0.079	0.011	0.04	0.462
Gingival score	Regular	Baseline	Visit 1	.0540*	0.014	0.003	0.010	0.098
		Baseline	Visit 2	0.035	0.044	1.000	− 0.066	0.135
		Baseline	Visit 3	0.088	0.036	0.299	− 0.021	0.198
		Visit 1	Visit 2	− 0.019	0.039	1	− 0.103	0.064
		Visit 1	Visit 3	0.034	0.031	1	− 0.042	0.111
		Visit 2	Visit 3	0.054	0.033	1	− 0.038	0.146
	T-shape	Baseline	Visit 1	.0556*	0.015	0.003	0.011	0.101
		Baseline	Visit 2	0.066	0.040	1	− 0.052	0.185
		Baseline	Visit 3	.1176*	0.018	< 0.001	0.061	0.174
		Visit 1	Visit 2	0.011	0.039	1	− 0.069	0.091
		Visit 1	Visit 3	.0620*	0.014	< 0.001	0.018	0.106
		Visit 2	Visit 3	0.051	0.031	1	− 0.035	0.138

I and J Time of study in pairwise comparison; LB lower bound, UB upper bound; * Significant difference at 0.05 level

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