1 Compared to a manual toothbrush
2 In Clean mode vs. a manual toothbrush; measured by MGI at 6 weeks
3 In a lab study vs. a manual toothbrush; actual results may vary
Comparing the effects of Philips Sonicare 9900 Prestige on plaque levels and gingival health
Assessing the impact of Philips Sonicare 9900 Prestige on induced staining
Sonicare Prestige 9900 vs. Oral-B iO Series 9