The effects of light on bleaching and tooth sensitivity during in-office vital bleaching: a systematic review and meta-analysis.
J Dent
; 40(8): 644-53, 2012 Aug.
Article
em En
| MEDLINE
| ID: mdl-22525016
ABSTRACT
OBJECTIVE:
To evaluate the influence of light on bleaching efficacy and tooth sensitivity during in-office vital bleaching. DATA SOURCES We performed a literature search using Medline, EMBASE and Cochrane Central up to September 2011. STUDY SELECTION All randomised controlled trials (RCTs) or quasi-RCTs comparing the light-activated bleaching system with non-activation bleaching system were included. Reports without clinical data concerning bleaching efficacy or tooth sensitivity were excluded.RESULTS:
Eleven studies were included in the meta-analysis. A light-activated system produced better immediate bleaching effects than a non-light system when lower concentrations of hydrogen peroxide (15-20% HP) were used (mean difference [MD], -1.78; 95% confidence interval [CI] [-2.30, -1.26]; P<0.00001). When high concentrations of HP (25-35%) were employed, there was no difference in the immediate bleaching effect (MD, -0.39; 95% CI [-1.15, 0.37]; P=0.32) or short-term bleaching effect (MD, 0.25; 95% CI [-0.47, 0.96]; P=0.50) between the light-activated system and the non-light system. However, the light-activated system produced a higher percentage of tooth sensitivity (odds ratio [OR], 3.53; 95% CI [1.37, 9.10]; P=0.009) than the non-light system during in-office bleaching.CONCLUSIONS:
Light increases the risk of tooth sensitivity during in-office bleaching, and light may not improve the bleaching effect when high concentrations of HP (25-35%) are employed. Therefore, dentists should use the light-activated system with great caution or avoid its use altogether. Further rigorous studies are, however, needed to explore the advantages of this light-activated system when lower concentrations of HP (15-20%) are used.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Clareamento Dental
/
Odontalgia
/
Clareadores Dentários
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
/
Systematic_reviews
Limite:
Humans
Idioma:
En
Revista:
J Dent
Ano de publicação:
2012
Tipo de documento:
Article