. 2020 Oct 16;70(Suppl 1):S7–S15. doi: 10.1111/idj.12571

Table 3.

Results for whole-mouth gingivitis efficacy endpoints

	Baseline (SD)^*	Adjusted mean (SE) change from baseline^†	Ratio vs. manual brush^‡	2-Sided P-value
MGI Score
Week 1
Manual brush	2.159 (0.124)	0.024 (0.007)	–	<0.001
Novel O-R electric brush	2.136 (0.111)	0.089 (0.011)	3.71	<0.001
Week 8
Manual brush	2.159 (0.124)	0.121 (0.012)	–	<0.001
Novel O-R electric brush	2.136 (0.111)	0.356 (0.019)	2.94	<0.001
GBI score
Week 1
Manual brush	0.246 (0.175)	0.010 (0.003)	–	<0.001
Novel O-R electric brush	0.213 (0.123)	0.030 (0.003)	3.00	<0.001
Week 8
Manual brush	0.246 (0.175)	0.048 (0.004)	–	<0.001
Novel O-R electric brush	0.213 (0.123)	0.144 (0.007)	3.00	<0.001
Number of bleeding sites
Week 1
Manual brush	34.073 (18.746)	1.356 (0.398)	–	<0.001
Novel O-R electric brush	30.145 (14.280)	3.607 (0.330)	2.66	<0.001
Week 8
Manual brush	34.073 (18.746)	6.662 (0.592)	–	<0.001
Novel O-R electric brush	30.145 (14.280)	19.257 (0.673)	2.89	<0.001

Baseline gingivitis measures did not differ significantly (P ≥ 0.219) between treatment groups.

^†

Reductions versus baseline were statistically significant at all time points for all measures for the manual brush (P < 0.002) and electric brush (P < 0.001).

^‡

Ratio = novel electric brush/manual brush.