Table 4.

Results for molar gingivitis efficacy endpoints

	Baseline (SD)*	Adjusted mean (SE) change from baseline†	Ratio vs. manual brush‡	2-Sided P-value
MGI
Week 1
Manual brush	2.251 (0.150)	0.002 (0.016)	–	0.048
Novel O-R electric brush	2.242 (0.179)	0.047 (0.016)	23.50
Week 8
Manual brush	2.251 (0.150)	0.072 (0.013)	–	<0.001
Novel O-R brush	2.242 (0.179)	0.223 (0.024)	3.10
GBI
Week 1
Manual brush	0.358 (0.182)	0.002 (0.004)	–	0.001
Novel O-R electric brush	0.355 (0.181)	0.023 (0.005)	11.50
Week 8
Manual Brush	0.358 (0.182)	0.029 (0.006)	–	<0.001
Novel O-R electric brush	0.355 (0.181)	0.189 (0.012)	6.52
Number of bleeding sites
Week 1
Manual brush	13.273 (6.193)	0.121 (0.141)	–	0.002
Novel O-R electric brush	12.018 (4.844)	0.732 (0.130)	6.05
Week 8
Manual brush	13.273 (6.193)	1.008 (0.243)	–	<0.001
Novel O-R electric brush	12.018 (4.844)	6.133 (0.423)	6.08

^*Baseline gingivitis measures in the molar region did not differ significantly (P ≥ 0.239) between treatment groups.

^†Reductions versus baseline were statistically significant in all regions only at week 8 for the manual brush (P < 0.001) and at both weeks 1 (P < 0.014) and 8 (P < 0.001) for the electric brush.

^‡Ratio = novel electric brush group/manual brush.