A double-blind randomized controlled clinical trial of 10 percent versus 16 percent carbamide peroxide tooth-bleaching agents: one-year follow-up.
J Am Dent Assoc
; 140(9): 1109-17, 2009 Sep.
Article
em En
| MEDLINE
| ID: mdl-19723943
BACKGROUND: The use of high-concentration tooth-bleaching agents has been associated with increased longevity of the whitening effect. The authors conducted a randomized controlled clinical trial to evaluate the longevity of the whitening effect at one year of two at-home tooth-bleaching agents. METHODS: The authors randomly assigned 92 participants with a mean shade of C1 or darker for six maxillary anterior teeth into two equal-sized groups according to carbamide peroxide concentration: 10 percent (CP10) or 16 percent (CP16). Treatment involved the use of a whitening agent in a tray for two hours daily for three weeks. The authors evaluated tooth shade with a shade guide and a spectrophotometer at baseline and one week, six months and one year after bleaching. Participants in both groups answered questions about their dietary and oral hygiene behaviors. RESULTS: At the one-year recall appointment, the teeth in both groups remained significantly lighter than at baseline. At this time, participants from the CP10 and CP16 groups consumed staining beverages and foods at a level as high as at the six-month recall appointment, and this consumption level was not statistically significant between groups (P > .5). CONCLUSIONS: One year after bleaching, both treatment groups had the same median tooth shade, which remained lighter than at baseline. CLINICAL IMPLICATIONS: Higher carbamide peroxide concentration does not increase the longevity of the whitening effect of at-home tooth-bleaching agents.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Peróxidos
/
Clareamento Dental
/
Ureia
/
Oxidantes
Tipo de estudo:
Clinical_trials
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
J Am Dent Assoc
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido