title: Four clinical studies comparing the efficacy of flat-trim and multi-level trim commercial toothbrushes.
abstract: Four independent clinical studies were conducted to compare the short- and long-term effectiveness of three commercially available toothbrushes. Two of the four studies compared plaque removal in a single-use, crossover design, and two studies compared plaque and gingivitis reduction efficacy for a long-term, three-month use. The Turesky modification of the Quigley-Hein Plaque Index and the modified Gingival Index were used to assess plaque and gingivitis levels, respectively. The two long-term studies directly compared the Oral-B P-35 and Crest Complete toothbrushes, while the two single-use studies compared the Oral-B P-35, Crest Complete and Colgate Precision toothbrushes. In all four studies, there were no significant differences found between any of the toothbrushes.
authors.affiliation: University of Alabama School of Dentistry, Birmingham.
authors.forename: R C
authors.initials: RC
authors.lastname: Reardon
authors.forename: M
authors.initials: M
authors.lastname: Cronin
authors.forename: F
authors.initials: F
authors.lastname: Balbo
authors.forename: T
authors.initials: T
authors.lastname: Schiff
authors.forename: L
authors.initials: L
authors.lastname: Menaker
authors.forename: T W
authors.initials: TW
authors.lastname: Weatherford
authors.forename: D
authors.initials: D
authors.lastname: Walley
authors.forename: J
authors.initials: J
authors.lastname: Vidra
authors.forename: K
authors.initials: K
authors.lastname: Zib
mesh_terms: D000704:Analysis of Variance; D003774:Dental Plaque Index; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D010512:Periodontal Index; D012044:Regression Analysis; D014099:Toothbrushing / Q000295:instrumentation*