title: The effectiveness of a counter-rotary action powered toothbrush and conventional toothbrush on plaque removal and gingival bleeding. A short term study.
abstract: Initial investigations have demonstrated the effectiveness of a new contra-rotary powered electric toothbrush in removing plaque supragingivally, subgingivally, and interproximally following a single use. The purpose of this study was to evaluate the effectiveness of a counter-rotary toothbrush following 1) one time instruction, 2) reinstruction and 1 week practice; and 3) a third instruction and 3 weeks of practice and home use. Twenty-four patients were studied; 12 using the counter-rotary toothbrush and 12 using a conventional toothbrush. Using O'Leary and Turesky plaque indices, both brushes significantly reduced supragingival plaque from baseline at all intervals. The counter-rotary brush, however, was more efficient than the conventional brush at all intervals (P less than 0.01). Using a Surface Area Plaque Index, both brushes significantly reduced supragingival plaque from baseline at all intervals but there were no significant differences between brushes. A timed bleeding index showed significant reduction in gingival bleeding following 28 days of brushing with both brushes. Again, the counter-rotary toothbrush was superior to the conventional toothbrush (P less than 0.01).
authors.affiliation: Department of Periodontics, School of Dentistry, University of Missouri-Kansas City.
authors.forename: W J
authors.initials: WJ
authors.lastname: Killoy
authors.forename: J W
authors.initials: JW
authors.lastname: Love
authors.forename: J
authors.initials: J
authors.lastname: Love
authors.forename: P F
authors.initials: PF
authors.lastname: Fedi
authors.forename: D E
authors.initials: DE
authors.lastname: Tira
mesh_terms: D003773:Dental Plaque / Q000628:therapy*; D003774:Dental Plaque Index; D004526:Efficiency; D004560:Electricity; D005884:Gingival Hemorrhage / Q000517:prevention & control; D005891:Gingivitis / Q000517:prevention & control*; D006801:Humans; D009910:Oral Hygiene; D010353:Patient Education as Topic; D010512:Periodontal Index; D016037:Single-Blind Method; D014099:Toothbrushing / Q000295:instrumentation*