:: ParamList :: 
 exec oc.GetBlogInfo
	@DomainName = '.com' ,
	@Language = 'en-US' ,
	@BusinessUnit = 'OP' ,
	@BlogCategory = '__ALL__' ,
	@BlogType = 'Research' ,
	@BlogURL = 'flossing-toothbrush-vs-regular-brushing-flossing-2021' ,
	@Brand = '__ALL__' ,

WaterpikTM Sonic-FusionTM: Up to 2X as Effective as Regular Brushing & Flossing for Improving Gingival Health

Comparison of sonic-flossing toothbrush to brushing and flossing on inflammation

Lyle DM, Qaqish JG, Goyal CR, Schuller R. IADR/AADR/CADR General Session & Exhibition. Presented at IADR Virtual Oral Session, July 24, 2021. Submitted for publication.


To determine the effectiveness of the WaterpikTM Sonic-FusionTM in reducing plaque and clinical signs of inflammation as compared to manual brushing and flossing.


One hundred and five subjects were randomized into three groups in this 4-week, parallel, single-blind, clinical trial. There were two experimental groups: Sonic-FusionTM with full (SFF) or compact (SFC) brush head. The control group use a manual brush and floss (MTF). Gingival health was measured using bleeding on probing (BOP) and the Modified Gingival Index (MGI) at baseline, 2-weeks, and 4-weeks. The Rustogi Modified Navy Plaque Index (RMNPI) scores were measured at baseline, 2-weeks, and 4-weeks. All subjects were provided written and verbal instructions.


All groups showed a significant reduction in BOP and MGI from baseline to 4-weeks (p<0.001). Both Sonic-FusionTM groups were significantly more effective than the MTF group for BOP, MGI, and RMNPI for whole mouth and interproximal areas.


This study demonstrates that the WaterpikTM Sonic-FusionTM is up to twice as effective as traditional brushing and flossing for improving gingival health.