title: Clinical evaluation of the whitening effect of over-the-counter dentifrices on vital teeth.
abstract: This randomized clinical trial evaluated the whitening potential of commercially available toothpastes. Sixty patients were selected and randomly divided into 4 groups (n=15), according to the dentifrice used: GI (control) - Colgate Total 12, GII - Close-up White Now, GIII: Oral-B 3D White, GIV: Colgate Luminous White. Three daily brushings were performed for 2 to 3 min each, during a period of 15 days. Patients had the color of their teeth evaluated before and after the treatment by means of a spectrophotometer (Vita EasyShade - CIE L*a*b*). Data obtained from L values were analyzed by one-way ANOVA and t test. ∆E was also evaluated to calculate color alteration, by NBS criteria. Mean (standard deviation) of initial values were GI: 82.9 (4.9); GII: 83.9 (5.8); GIII: 83.9 (7.2); GIV: 86.4 (3.4) and final values were GI: 84.1 (6.3); GII: 84.6 (6.1); GIII: 84.2 (7.1); GIV: 88.2 (2.8). In conclusion, the dentifrices showed no lightening action on vital teeth, except for Colgate Luminous White; but according to NBS criteria, there was no noticeable visible change to the patients in any group.
authors.affiliation: Department of Dentistry, CESCAGE - Campos Gerais Higher Education Center, Ponta Grossa, PR, Brazil.
authors.forename: Bruna Andrade
authors.initials: BA
authors.lastname: Horn
authors.affiliation: Department of Dentistry, UEPG - State University of Ponta Grossa, Ponta Grossa, PR, Brazil.
authors.forename: Bruna Fortes
authors.initials: BF
authors.lastname: Bittencourt
authors.affiliation: Department of Dentistry, UEPG - State University of Ponta Grossa, Ponta Grossa, PR, Brazil.
authors.forename: Osnara Maria Mongruel
authors.initials: OM
authors.lastname: Gomes
authors.affiliation: Department of Dentistry, CESCAGE - Campos Gerais Higher Education Center, Ponta Grossa, PR, Brazil.
authors.forename: Patrícia Almeida
authors.initials: PA
authors.lastname: Farhat
mesh_terms: D003802:Dentifrices; D006801:Humans; D013053:Spectrophotometry; D014073:Tooth Bleaching
chemical_list: D003802:Dentifrices