An Evaluation of a New Ultrasonic Water Irrigator in the Management of Gingival Health: A Randomised Study

This randomised, single-blind, controlled study aimed to compare daily adjunctive use of an ultrasonic water irrigation device to dental floss in controlling plaque and gingival inflammation in patients with gingivitis.

Participants were randomly allocated to either daily use of an ultrasonic water irrigator or dental floss as an adjunct to manual toothbrushing for 4 weeks, with periodontal assessment repeated at 1 and 4 weeks after baseline (Rustogi Modified Navy Plaque Index [PI], Loe and Silness Gingival Index [GI] and bleeding on marginal probing [BOMP]).

Sixty-two participants completed the investigation. Statistically significant reductions in total and marginal PI at Weeks 1 and 4 were noted in both groups compared to baseline (p < 0.05) with no significant differences between groups. BOMP and GI scores were likewise significantly reduced in both groups at Weeks 1 and 4 compared to baseline (p < 0.01). However, at Week 4, those using the ultrasonic water irrigator showed a significantly greater reduction in GI scores when compared to the floss group (-0.35 ± 0.26 vs. -0.16 ± 0.25, respectively, p < 0.01) and a significantly greater reduction in BOMP scores when compared to floss (-0.26 ± 0.12 vs. -0.15 ± 0.15, respectively, p < 0.01). Those using the ultrasonic water irrigator also reported easier usage scores (p < 0.05) when compared to the floss group.

Daily use of the ultrasonic water irrigator resulted in significantly greater reductions in gingival inflammation (gingival index and BOMP) than dental floss after 4 weeks, whereas plaque removal was similarly effective using the irrigator or floss.