Comparison of the use of different modes of mechanical oral hygiene in prevention of plaque and gingivitis.

BACKGROUND: The objective of this study was to evaluate the effect of an oscillating/rotating/pulsating powered toothbrush on plaque and gingivitis prevention over a 9-month period.

METHODS: The study had an examiner-masked, randomized, three-group parallel design. A total of 122 subjects >or= 18 years of age in good general health and with at least five teeth per quadrant and no pockets >or= 5 mm were included. A 3-week preexperimental period of extensive oral home care, including rinses, was started to improve gingival health. Professional oral hygiene instruction with a manual brush was provided. At baseline, subjects were assigned to one of three regimens: twice daily brushing with a manual toothbrush, a manual toothbrush and the use of floss, or a powered toothbrush. Subjects were professionally instructed in their regimen and given a prophylaxis. Two weeks later, oral hygiene reinforcement was provided. Gingival bleeding, plaque, staining, and gingival abrasion were assessed during the preexperimental period and at baseline, 10 weeks, and 6 and 9 months.

RESULTS: There was a significant reduction in plaque and gingivitis from the preexperimental period to baseline. At 10 weeks and 6 and 9 months, the level of plaque was statistically significantly lower with the powered toothbrush versus the other two regimens (P
CONCLUSIONS: The powered toothbrush maintained lower plaque levels for 9 months following the 3-week treatment phase better than the manual toothbrush with or without floss. The powered toothbrush showed significant benefits in preventing gingival bleeding versus manual brushing alone. All regimens were safe for oral tissues.